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Linus Torvalds1da177e2005-04-16 15:20:36 -07001
2 LINUX ALLOCATED DEVICES (2.6+ version)
3
Alan Cox04c860c2009-04-03 14:50:52 +01004 Maintained by Alan Cox <device@lanana.org>
Linus Torvalds1da177e2005-04-16 15:20:36 -07005
Alan Coxe379ec72009-04-06 14:55:50 +01006 Last revised: 6th April 2009
Linus Torvalds1da177e2005-04-16 15:20:36 -07007
8This list is the Linux Device List, the official registry of allocated
9device numbers and /dev directory nodes for the Linux operating
10system.
11
12The latest version of this list is available from
13http://www.lanana.org/docs/device-list/ or
14ftp://ftp.kernel.org/pub/linux/docs/device-list/. This version may be
15newer than the one distributed with the Linux kernel.
16
17The LaTeX version of this document is no longer maintained.
18
19This document is included by reference into the Filesystem Hierarchy
20Standard (FHS). The FHS is available from http://www.pathname.com/fhs/.
21
22Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
23platform only. Allocations marked (68k/Atari) apply to Linux/68k on
24the Atari platform only.
25
26The symbol {2.6} means the allocation is obsolete and scheduled for
27removal once kernel version 2.6 (or equivalent) is released. Some of these
28allocations have already been removed.
29
30This document is in the public domain. The author requests, however,
31that semantically altered versions are not distributed without
32permission of the author, assuming the author can be contacted without
33an unreasonable effort.
34
35In particular, please don't sent patches for this list to Linus, at
36least not without contacting me first.
37
38I do not have any information about these devices beyond what appears
39on this list. Any such information requests will be deleted without
40reply.
41
42
43 **** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
44
45To have a major number allocated, or a minor number in situations
46where that applies (e.g. busmice), please contact me with the
47appropriate device information. Also, if you have additional
48information regarding any of the devices listed below, or if I have
49made a mistake, I would greatly appreciate a note.
50
51I do, however, make a few requests about the nature of your report.
52This is necessary for me to be able to keep this list up to date and
53correct in a timely manner. First of all, *please* send it to the
54correct address... <device@lanana.org>. I receive hundreds of email
55messages a day, so mail sent to other addresses may very well get lost
56in the avalanche. Please put in a descriptive subject, so I can find
57your mail again should I need to. Too many people send me email
58saying just "device number request" in the subject.
59
60Second, please include a description of the device *in the same format
61as this list*. The reason for this is that it is the only way I have
62found to ensure I have all the requisite information to publish your
63device and avoid conflicts.
64
65Third, please don't assume that the distributed version of the list is
66up to date. Due to the number of registrations I have to maintain it
67in "batch mode", so there is likely additional registrations that
68haven't been listed yet.
69
Alan Cox04c860c2009-04-03 14:50:52 +010070Fourth, remember that Linux now has extensive support for dynamic allocation
71of device numbering and can use sysfs and udev to handle the naming needs.
72There are still some exceptions in the serial and boot device area. Before
73asking for a device number make sure you actually need one.
74
Linus Torvalds1da177e2005-04-16 15:20:36 -070075Finally, sometimes I have to play "namespace police." Please don't be
76offended. I often get submissions for /dev names that would be bound
77to cause conflicts down the road. I am trying to avoid getting in a
78situation where we would have to suffer an incompatible forward
79change. Therefore, please consult with me *before* you make your
80device names and numbers in any way public, at least to the point
81where it would be at all difficult to get them changed.
82
83Your cooperation is appreciated.
84
85
86 0 Unnamed devices (e.g. non-device mounts)
87 0 = reserved as null device number
88 See block major 144, 145, 146 for expansion areas.
89
90 1 char Memory devices
91 1 = /dev/mem Physical memory access
92 2 = /dev/kmem Kernel virtual memory access
93 3 = /dev/null Null device
94 4 = /dev/port I/O port access
95 5 = /dev/zero Null byte source
96 6 = /dev/core OBSOLETE - replaced by /proc/kcore
97 7 = /dev/full Returns ENOSPC on write
98 8 = /dev/random Nondeterministic random number gen.
99 9 = /dev/urandom Faster, less secure random number gen.
Matt LaPlante5d3f0832006-11-30 05:21:10 +0100100 10 = /dev/aio Asynchronous I/O notification interface
Kay Sievers3b552b92012-05-08 18:50:50 +0200101 11 = /dev/kmsg Writes to this come out as printk's, reads
102 export the buffered printk records.
Zhang Yanfeia11edb52013-07-03 15:08:36 -0700103 12 = /dev/oldmem OBSOLETE - replaced by /proc/vmcore
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800104
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 1 block RAM disk
106 0 = /dev/ram0 First RAM disk
107 1 = /dev/ram1 Second RAM disk
108 ...
Alan Cox04c860c2009-04-03 14:50:52 +0100109 250 = /dev/initrd Initial RAM disk
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110
111 Older kernels had /dev/ramdisk (1, 1) here.
112 /dev/initrd refers to a RAM disk which was preloaded
113 by the boot loader; newer kernels use /dev/ram0 for
114 the initrd.
115
116 2 char Pseudo-TTY masters
117 0 = /dev/ptyp0 First PTY master
118 1 = /dev/ptyp1 Second PTY master
119 ...
120 255 = /dev/ptyef 256th PTY master
121
122 Pseudo-tty's are named as follows:
123 * Masters are "pty", slaves are "tty";
124 * the fourth letter is one of pqrstuvwxyzabcde indicating
125 the 1st through 16th series of 16 pseudo-ttys each, and
126 * the fifth letter is one of 0123456789abcdef indicating
127 the position within the series.
128
129 These are the old-style (BSD) PTY devices; Unix98
130 devices are on major 128 and above and use the PTY
131 master multiplex (/dev/ptmx) to acquire a PTY on
132 demand.
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800133
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 2 block Floppy disks
135 0 = /dev/fd0 Controller 0, drive 0, autodetect
136 1 = /dev/fd1 Controller 0, drive 1, autodetect
137 2 = /dev/fd2 Controller 0, drive 2, autodetect
138 3 = /dev/fd3 Controller 0, drive 3, autodetect
139 128 = /dev/fd4 Controller 1, drive 0, autodetect
140 129 = /dev/fd5 Controller 1, drive 1, autodetect
141 130 = /dev/fd6 Controller 1, drive 2, autodetect
142 131 = /dev/fd7 Controller 1, drive 3, autodetect
143
144 To specify format, add to the autodetect device number:
145 0 = /dev/fd? Autodetect format
146 4 = /dev/fd?d360 5.25" 360K in a 360K drive(1)
147 20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1)
148 48 = /dev/fd?h410 5.25" 410K in a 1200K drive
149 64 = /dev/fd?h420 5.25" 420K in a 1200K drive
150 24 = /dev/fd?h720 5.25" 720K in a 1200K drive
151 80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1)
152 8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1)
153 40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1)
154 56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive
155 72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive
156 92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1)
157
158 12 = /dev/fd?u360 3.5" 360K Double Density(2)
159 16 = /dev/fd?u720 3.5" 720K Double Density(1)
160 120 = /dev/fd?u800 3.5" 800K Double Density(2)
161 52 = /dev/fd?u820 3.5" 820K Double Density
162 68 = /dev/fd?u830 3.5" 830K Double Density
163 84 = /dev/fd?u1040 3.5" 1040K Double Density(1)
164 88 = /dev/fd?u1120 3.5" 1120K Double Density(1)
165 28 = /dev/fd?u1440 3.5" 1440K High Density(1)
166 124 = /dev/fd?u1600 3.5" 1600K High Density(1)
167 44 = /dev/fd?u1680 3.5" 1680K High Density(3)
168 60 = /dev/fd?u1722 3.5" 1722K High Density
169 76 = /dev/fd?u1743 3.5" 1743K High Density
170 96 = /dev/fd?u1760 3.5" 1760K High Density
171 116 = /dev/fd?u1840 3.5" 1840K High Density(3)
172 100 = /dev/fd?u1920 3.5" 1920K High Density(1)
173 32 = /dev/fd?u2880 3.5" 2880K Extra Density(1)
174 104 = /dev/fd?u3200 3.5" 3200K Extra Density
175 108 = /dev/fd?u3520 3.5" 3520K Extra Density
176 112 = /dev/fd?u3840 3.5" 3840K Extra Density(1)
177
178 36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete?
179
180 (1) Autodetectable format
181 (2) Autodetectable format in a Double Density (720K) drive only
182 (3) Autodetectable format in a High Density (1440K) drive only
183
184 NOTE: The letter in the device name (d, q, h or u)
185 signifies the type of drive: 5.25" Double Density (d),
186 5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
187 (any model, u). The use of the capital letters D, H
188 and E for the 3.5" models have been deprecated, since
189 the drive type is insignificant for these devices.
190
191 3 char Pseudo-TTY slaves
192 0 = /dev/ttyp0 First PTY slave
193 1 = /dev/ttyp1 Second PTY slave
194 ...
195 255 = /dev/ttyef 256th PTY slave
196
197 These are the old-style (BSD) PTY devices; Unix98
198 devices are on major 136 and above.
199
200 3 block First MFM, RLL and IDE hard disk/CD-ROM interface
201 0 = /dev/hda Master: whole disk (or CD-ROM)
202 64 = /dev/hdb Slave: whole disk (or CD-ROM)
203
204 For partitions, add to the whole disk device number:
205 0 = /dev/hd? Whole disk
206 1 = /dev/hd?1 First partition
207 2 = /dev/hd?2 Second partition
208 ...
209 63 = /dev/hd?63 63rd partition
210
211 For Linux/i386, partitions 1-4 are the primary
212 partitions, and 5 and above are logical partitions.
213 Other versions of Linux use partitioning schemes
214 appropriate to their respective architectures.
215
216 4 char TTY devices
217 0 = /dev/tty0 Current virtual console
218
219 1 = /dev/tty1 First virtual console
220 ...
221 63 = /dev/tty63 63rd virtual console
222 64 = /dev/ttyS0 First UART serial port
223 ...
224 255 = /dev/ttyS191 192nd UART serial port
225
226 UART serial ports refer to 8250/16450/16550 series devices.
227
228 Older versions of the Linux kernel used this major
229 number for BSD PTY devices. As of Linux 2.1.115, this
230 is no longer supported. Use major numbers 2 and 3.
231
232 4 block Aliases for dynamically allocated major devices to be used
233 when its not possible to create the real device nodes
234 because the root filesystem is mounted read-only.
235
236 0 = /dev/root
237
238 5 char Alternate TTY devices
239 0 = /dev/tty Current TTY device
240 1 = /dev/console System console
241 2 = /dev/ptmx PTY master multiplex
Samo Pogacnik24b4b672010-08-25 20:44:07 +0200242 3 = /dev/ttyprintk User messages via printk TTY device
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 64 = /dev/cua0 Callout device for ttyS0
244 ...
245 255 = /dev/cua191 Callout device for ttyS191
246
247 (5,1) is /dev/console starting with Linux 2.1.71. See
248 the section on terminal devices for more information
249 on /dev/console.
250
251 6 char Parallel printer devices
252 0 = /dev/lp0 Parallel printer on parport0
253 1 = /dev/lp1 Parallel printer on parport1
254 ...
255
256 Current Linux kernels no longer have a fixed mapping
257 between parallel ports and I/O addresses. Instead,
258 they are redirected through the parport multiplex layer.
259
260 7 char Virtual console capture devices
261 0 = /dev/vcs Current vc text contents
262 1 = /dev/vcs1 tty1 text contents
263 ...
264 63 = /dev/vcs63 tty63 text contents
265 128 = /dev/vcsa Current vc text/attribute contents
266 129 = /dev/vcsa1 tty1 text/attribute contents
267 ...
268 191 = /dev/vcsa63 tty63 text/attribute contents
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800269
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270 NOTE: These devices permit both read and write access.
271
272 7 block Loopback devices
Jan Engelhardt11420212006-06-23 02:05:34 -0700273 0 = /dev/loop0 First loop device
274 1 = /dev/loop1 Second loop device
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 ...
276
Jan Engelhardt11420212006-06-23 02:05:34 -0700277 The loop devices are used to mount filesystems not
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 associated with block devices. The binding to the
Jan Engelhardt11420212006-06-23 02:05:34 -0700279 loop devices is handled by mount(8) or losetup(8).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
281 8 block SCSI disk devices (0-15)
282 0 = /dev/sda First SCSI disk whole disk
283 16 = /dev/sdb Second SCSI disk whole disk
284 32 = /dev/sdc Third SCSI disk whole disk
285 ...
286 240 = /dev/sdp Sixteenth SCSI disk whole disk
287
288 Partitions are handled in the same way as for IDE
289 disks (see major number 3) except that the limit on
290 partitions is 15.
291
292 9 char SCSI tape devices
293 0 = /dev/st0 First SCSI tape, mode 0
294 1 = /dev/st1 Second SCSI tape, mode 0
295 ...
296 32 = /dev/st0l First SCSI tape, mode 1
297 33 = /dev/st1l Second SCSI tape, mode 1
298 ...
299 64 = /dev/st0m First SCSI tape, mode 2
300 65 = /dev/st1m Second SCSI tape, mode 2
301 ...
302 96 = /dev/st0a First SCSI tape, mode 3
303 97 = /dev/st1a Second SCSI tape, mode 3
304 ...
305 128 = /dev/nst0 First SCSI tape, mode 0, no rewind
306 129 = /dev/nst1 Second SCSI tape, mode 0, no rewind
307 ...
308 160 = /dev/nst0l First SCSI tape, mode 1, no rewind
309 161 = /dev/nst1l Second SCSI tape, mode 1, no rewind
310 ...
311 192 = /dev/nst0m First SCSI tape, mode 2, no rewind
312 193 = /dev/nst1m Second SCSI tape, mode 2, no rewind
313 ...
314 224 = /dev/nst0a First SCSI tape, mode 3, no rewind
315 225 = /dev/nst1a Second SCSI tape, mode 3, no rewind
316 ...
317
318 "No rewind" refers to the omission of the default
319 automatic rewind on device close. The MTREW or MTOFFL
320 ioctl()'s can be used to rewind the tape regardless of
321 the device used to access it.
322
323 9 block Metadisk (RAID) devices
324 0 = /dev/md0 First metadisk group
325 1 = /dev/md1 Second metadisk group
326 ...
327
328 The metadisk driver is used to span a
329 filesystem across multiple physical disks.
330
331 10 char Non-serial mice, misc features
332 0 = /dev/logibm Logitech bus mouse
333 1 = /dev/psaux PS/2-style mouse port
334 2 = /dev/inportbm Microsoft Inport bus mouse
335 3 = /dev/atibm ATI XL bus mouse
336 4 = /dev/jbm J-mouse
337 4 = /dev/amigamouse Amiga mouse (68k/Amiga)
338 5 = /dev/atarimouse Atari mouse
339 6 = /dev/sunmouse Sun mouse
340 7 = /dev/amigamouse1 Second Amiga mouse
341 8 = /dev/smouse Simple serial mouse driver
342 9 = /dev/pc110pad IBM PC-110 digitizer pad
343 10 = /dev/adbmouse Apple Desktop Bus mouse
344 11 = /dev/vrtpanel Vr41xx embedded touch panel
345 13 = /dev/vpcmouse Connectix Virtual PC Mouse
346 14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen
347 15 = /dev/touchscreen/mk712 MK712 touchscreen
348 128 = /dev/beep Fancy beep device
Alan Cox04c860c2009-04-03 14:50:52 +0100349 129 =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 130 = /dev/watchdog Watchdog timer port
351 131 = /dev/temperature Machine internal temperature
352 132 = /dev/hwtrap Hardware fault trap
353 133 = /dev/exttrp External device trap
354 134 = /dev/apm_bios Advanced Power Management BIOS
355 135 = /dev/rtc Real Time Clock
356 139 = /dev/openprom SPARC OpenBoot PROM
357 140 = /dev/relay8 Berkshire Products Octal relay card
358 141 = /dev/relay16 Berkshire Products ISO-16 relay card
Alan Cox04c860c2009-04-03 14:50:52 +0100359 142 =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 143 = /dev/pciconf PCI configuration space
361 144 = /dev/nvram Non-volatile configuration RAM
Alan Cox04c860c2009-04-03 14:50:52 +0100362 145 = /dev/hfmodem Soundcard shortwave modem control
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 146 = /dev/graphics Linux/SGI graphics device
364 147 = /dev/opengl Linux/SGI OpenGL pipe
365 148 = /dev/gfx Linux/SGI graphics effects device
366 149 = /dev/input/mouse Linux/SGI Irix emulation mouse
367 150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
368 151 = /dev/led Front panel LEDs
369 152 = /dev/kpoll Kernel Poll Driver
370 153 = /dev/mergemem Memory merge device
371 154 = /dev/pmu Macintosh PowerBook power manager
372 155 = /dev/isictl MultiTech ISICom serial control
373 156 = /dev/lcd Front panel LCD display
374 157 = /dev/ac Applicom Intl Profibus card
375 158 = /dev/nwbutton Netwinder external button
376 159 = /dev/nwdebug Netwinder debug interface
377 160 = /dev/nwflash Netwinder flash memory
378 161 = /dev/userdma User-space DMA access
379 162 = /dev/smbus System Management Bus
380 163 = /dev/lik Logitech Internet Keyboard
381 164 = /dev/ipmo Intel Intelligent Platform Management
Vinson Leebc286332011-12-08 15:18:02 -0800382 165 = /dev/vmmon VMware virtual machine monitor
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 166 = /dev/i2o/ctl I2O configuration manager
384 167 = /dev/specialix_sxctl Specialix serial control
385 168 = /dev/tcldrv Technology Concepts serial control
386 169 = /dev/specialix_rioctl Specialix RIO serial control
387 170 = /dev/thinkpad/thinkpad IBM Thinkpad devices
388 171 = /dev/srripc QNX4 API IPC manager
389 172 = /dev/usemaclone Semaphore clone device
390 173 = /dev/ipmikcs Intelligent Platform Management
391 174 = /dev/uctrl SPARCbook 3 microcontroller
392 175 = /dev/agpgart AGP Graphics Address Remapping Table
393 176 = /dev/gtrsc Gorgy Timing radio clock
394 177 = /dev/cbm Serial CBM bus
395 178 = /dev/jsflash JavaStation OS flash SIMM
396 179 = /dev/xsvc High-speed shared-mem/semaphore service
397 180 = /dev/vrbuttons Vr41xx button input device
398 181 = /dev/toshiba Toshiba laptop SMM support
399 182 = /dev/perfctr Performance-monitoring counters
400 183 = /dev/hwrng Generic random number generator
401 184 = /dev/cpu/microcode CPU microcode update interface
402 186 = /dev/atomicps Atomic shapshot of process state data
403 187 = /dev/irnet IrNET device
404 188 = /dev/smbusbios SMBus BIOS
405 189 = /dev/ussp_ctl User space serial port control
406 190 = /dev/crash Mission Critical Linux crash dump facility
407 191 = /dev/pcl181 <information missing>
408 192 = /dev/nas_xbus NAS xbus LCD/buttons access
409 193 = /dev/d7s SPARC 7-segment display
410 194 = /dev/zkshim Zero-Knowledge network shim control
411 195 = /dev/elographics/e2201 Elographics touchscreen E271-2201
Alex Williamson8dcf94b2013-12-19 10:17:11 -0700412 196 = /dev/vfio/vfio VFIO userspace driver interface
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 198 = /dev/sexec Signed executable interface
414 199 = /dev/scanners/cuecat :CueCat barcode scanner
415 200 = /dev/net/tun TAP/TUN network device
416 201 = /dev/button/gulpb Transmeta GULP-B buttons
417 202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control
Tom Gundersencb2ffb22013-09-09 20:18:27 +0200418 203 = /dev/cuse Cuse (character device in user-space)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 204 = /dev/video/em8300 EM8300 DVD decoder control
420 205 = /dev/video/em8300_mv EM8300 DVD decoder video
421 206 = /dev/video/em8300_ma EM8300 DVD decoder audio
422 207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture
423 208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller
424 209 = /dev/compaq/cpqrid Compaq Remote Insight Driver
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800425 210 = /dev/impi/bt IMPI coprocessor block transfer
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 211 = /dev/impi/smic IMPI coprocessor stream interface
427 212 = /dev/watchdogs/0 First watchdog device
428 213 = /dev/watchdogs/1 Second watchdog device
429 214 = /dev/watchdogs/2 Third watchdog device
430 215 = /dev/watchdogs/3 Fourth watchdog device
431 216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel
432 217 = /dev/ni/natmotn National Instruments Motion
433 218 = /dev/kchuid Inter-process chuid control
434 219 = /dev/modems/mwave MWave modem firmware upload
435 220 = /dev/mptctl Message passing technology (MPT) control
436 221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver
437 222 = /dev/mvista/hasi Montavista PICMG high availability
438 223 = /dev/input/uinput User level driver support for input
439 224 = /dev/tpm TCPA TPM driver
440 225 = /dev/pps Pulse Per Second driver
441 226 = /dev/systrace Systrace device
442 227 = /dev/mcelog X86_64 Machine Check Exception driver
443 228 = /dev/hpet HPET driver
444 229 = /dev/fuse Fuse (virtual filesystem in user-space)
445 230 = /dev/midishare MidiShare driver
Alan Cox04c860c2009-04-03 14:50:52 +0100446 231 = /dev/snapshot System memory snapshot device
447 232 = /dev/kvm Kernel-based virtual machine (hardware virtualization extensions)
448 233 = /dev/kmview View-OS A process with a view
Kay Sievers578454f2010-05-20 18:07:20 +0200449 234 = /dev/btrfs-control Btrfs control device
450 235 = /dev/autofs Autofs control device
Peter Rajnoha7e507eb2010-08-12 04:14:05 +0100451 236 = /dev/mapper/control Device-Mapper control device
stephen hemminger7c7c7f02012-01-11 19:30:38 +0000452 237 = /dev/loop-control Loopback control device
453 238 = /dev/vhost-net Host kernel accelerator for virtio net
454
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 240-254 Reserved for local use
456 255 Reserved for MISC_DYNAMIC_MINOR
457
458 11 char Raw keyboard device (Linux/SPARC only)
459 0 = /dev/kbd Raw keyboard device
460
461 11 char Serial Mux device (Linux/PA-RISC only)
462 0 = /dev/ttyB0 First mux port
463 1 = /dev/ttyB1 Second mux port
464 ...
465
466 11 block SCSI CD-ROM devices
467 0 = /dev/scd0 First SCSI CD-ROM
468 1 = /dev/scd1 Second SCSI CD-ROM
469 ...
470
471 The prefix /dev/sr (instead of /dev/scd) has been deprecated.
472
473 12 char QIC-02 tape
474 2 = /dev/ntpqic11 QIC-11, no rewind-on-close
475 3 = /dev/tpqic11 QIC-11, rewind-on-close
476 4 = /dev/ntpqic24 QIC-24, no rewind-on-close
477 5 = /dev/tpqic24 QIC-24, rewind-on-close
478 6 = /dev/ntpqic120 QIC-120, no rewind-on-close
479 7 = /dev/tpqic120 QIC-120, rewind-on-close
480 8 = /dev/ntpqic150 QIC-150, no rewind-on-close
481 9 = /dev/tpqic150 QIC-150, rewind-on-close
482
483 The device names specified are proposed -- if there
484 are "standard" names for these devices, please let me know.
485
Alan Cox04c860c2009-04-03 14:50:52 +0100486 12 block
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487
488 13 char Input core
489 0 = /dev/input/js0 First joystick
490 1 = /dev/input/js1 Second joystick
491 ...
492 32 = /dev/input/mouse0 First mouse
493 33 = /dev/input/mouse1 Second mouse
494 ...
495 63 = /dev/input/mice Unified mouse
496 64 = /dev/input/event0 First event queue
497 65 = /dev/input/event1 Second event queue
498 ...
499
500 Each device type has 5 bits (32 minors).
501
Linus Walleij1fbeeba2013-05-17 15:08:41 +0200502 13 block Previously used for the XT disk (/dev/xdN)
503 Deleted in kernel v3.9.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504
505 14 char Open Sound System (OSS)
506 0 = /dev/mixer Mixer control
507 1 = /dev/sequencer Audio sequencer
508 2 = /dev/midi00 First MIDI port
509 3 = /dev/dsp Digital audio
510 4 = /dev/audio Sun-compatible digital audio
Alan Cox04c860c2009-04-03 14:50:52 +0100511 6 =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 7 = /dev/audioctl SPARC audio control device
513 8 = /dev/sequencer2 Sequencer -- alternate device
514 16 = /dev/mixer1 Second soundcard mixer control
515 17 = /dev/patmgr0 Sequencer patch manager
516 18 = /dev/midi01 Second MIDI port
517 19 = /dev/dsp1 Second soundcard digital audio
518 20 = /dev/audio1 Second soundcard Sun digital audio
519 33 = /dev/patmgr1 Sequencer patch manager
520 34 = /dev/midi02 Third MIDI port
521 50 = /dev/midi03 Fourth MIDI port
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800522
Alan Cox04c860c2009-04-03 14:50:52 +0100523 14 block
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524
525 15 char Joystick
526 0 = /dev/js0 First analog joystick
527 1 = /dev/js1 Second analog joystick
528 ...
529 128 = /dev/djs0 First digital joystick
530 129 = /dev/djs1 Second digital joystick
531 ...
532 15 block Sony CDU-31A/CDU-33A CD-ROM
533 0 = /dev/sonycd Sony CDU-31a CD-ROM
534
535 16 char Non-SCSI scanners
536 0 = /dev/gs4500 Genius 4500 handheld scanner
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800537
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538 16 block GoldStar CD-ROM
539 0 = /dev/gscd GoldStar CD-ROM
540
Alan Cox04c860c2009-04-03 14:50:52 +0100541 17 char OBSOLETE (was Chase serial card)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542 0 = /dev/ttyH0 First Chase port
543 1 = /dev/ttyH1 Second Chase port
544 ...
545 17 block Optics Storage CD-ROM
546 0 = /dev/optcd Optics Storage CD-ROM
547
Alan Cox04c860c2009-04-03 14:50:52 +0100548 18 char OBSOLETE (was Chase serial card - alternate devices)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 0 = /dev/cuh0 Callout device for ttyH0
550 1 = /dev/cuh1 Callout device for ttyH1
551 ...
552 18 block Sanyo CD-ROM
553 0 = /dev/sjcd Sanyo CD-ROM
554
555 19 char Cyclades serial card
556 0 = /dev/ttyC0 First Cyclades port
557 ...
558 31 = /dev/ttyC31 32nd Cyclades port
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800559
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560 19 block "Double" compressed disk
561 0 = /dev/double0 First compressed disk
562 ...
563 7 = /dev/double7 Eighth compressed disk
564 128 = /dev/cdouble0 Mirror of first compressed disk
565 ...
566 135 = /dev/cdouble7 Mirror of eighth compressed disk
567
568 See the Double documentation for the meaning of the
569 mirror devices.
570
571 20 char Cyclades serial card - alternate devices
572 0 = /dev/cub0 Callout device for ttyC0
573 ...
574 31 = /dev/cub31 Callout device for ttyC31
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800575
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 20 block Hitachi CD-ROM (under development)
577 0 = /dev/hitcd Hitachi CD-ROM
578
579 21 char Generic SCSI access
580 0 = /dev/sg0 First generic SCSI device
581 1 = /dev/sg1 Second generic SCSI device
582 ...
583
584 Most distributions name these /dev/sga, /dev/sgb...;
585 this sets an unnecessary limit of 26 SCSI devices in
586 the system and is counter to standard Linux
587 device-naming practice.
588
589 21 block Acorn MFM hard drive interface
590 0 = /dev/mfma First MFM drive whole disk
591 64 = /dev/mfmb Second MFM drive whole disk
592
593 This device is used on the ARM-based Acorn RiscPC.
594 Partitions are handled the same way as for IDE disks
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800595 (see major number 3).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
597 22 char Digiboard serial card
598 0 = /dev/ttyD0 First Digiboard port
599 1 = /dev/ttyD1 Second Digiboard port
600 ...
601 22 block Second IDE hard disk/CD-ROM interface
602 0 = /dev/hdc Master: whole disk (or CD-ROM)
603 64 = /dev/hdd Slave: whole disk (or CD-ROM)
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800604
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 Partitions are handled the same way as for the first
606 interface (see major number 3).
607
608 23 char Digiboard serial card - alternate devices
609 0 = /dev/cud0 Callout device for ttyD0
610 1 = /dev/cud1 Callout device for ttyD1
611 ...
612 23 block Mitsumi proprietary CD-ROM
613 0 = /dev/mcd Mitsumi CD-ROM
614
615 24 char Stallion serial card
616 0 = /dev/ttyE0 Stallion port 0 card 0
617 1 = /dev/ttyE1 Stallion port 1 card 0
618 ...
619 64 = /dev/ttyE64 Stallion port 0 card 1
620 65 = /dev/ttyE65 Stallion port 1 card 1
621 ...
622 128 = /dev/ttyE128 Stallion port 0 card 2
623 129 = /dev/ttyE129 Stallion port 1 card 2
624 ...
625 192 = /dev/ttyE192 Stallion port 0 card 3
626 193 = /dev/ttyE193 Stallion port 1 card 3
627 ...
628 24 block Sony CDU-535 CD-ROM
629 0 = /dev/cdu535 Sony CDU-535 CD-ROM
630
631 25 char Stallion serial card - alternate devices
632 0 = /dev/cue0 Callout device for ttyE0
633 1 = /dev/cue1 Callout device for ttyE1
634 ...
635 64 = /dev/cue64 Callout device for ttyE64
636 65 = /dev/cue65 Callout device for ttyE65
637 ...
638 128 = /dev/cue128 Callout device for ttyE128
639 129 = /dev/cue129 Callout device for ttyE129
640 ...
641 192 = /dev/cue192 Callout device for ttyE192
642 193 = /dev/cue193 Callout device for ttyE193
643 ...
644 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
645 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
646 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
647 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
648 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
649
Alan Cox04c860c2009-04-03 14:50:52 +0100650 26 char
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800651
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
653 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
654 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
655 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
656 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
657
658 27 char QIC-117 tape
659 0 = /dev/qft0 Unit 0, rewind-on-close
660 1 = /dev/qft1 Unit 1, rewind-on-close
661 2 = /dev/qft2 Unit 2, rewind-on-close
662 3 = /dev/qft3 Unit 3, rewind-on-close
663 4 = /dev/nqft0 Unit 0, no rewind-on-close
664 5 = /dev/nqft1 Unit 1, no rewind-on-close
665 6 = /dev/nqft2 Unit 2, no rewind-on-close
666 7 = /dev/nqft3 Unit 3, no rewind-on-close
667 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
668 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
669 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
670 19 = /dev/zqft3 Unit 3, rewind-on-close, compression
671 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
672 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
673 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
674 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
675 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
676 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
677 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
678 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
679 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
680 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
681 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
682 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800683
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
685 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
686 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
687 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
688 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
689
690 28 char Stallion serial card - card programming
691 0 = /dev/staliomem0 First Stallion card I/O memory
692 1 = /dev/staliomem1 Second Stallion card I/O memory
693 2 = /dev/staliomem2 Third Stallion card I/O memory
694 3 = /dev/staliomem3 Fourth Stallion card I/O memory
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800695
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 28 char Atari SLM ACSI laser printer (68k/Atari)
697 0 = /dev/slm0 First SLM laser printer
698 1 = /dev/slm1 Second SLM laser printer
699 ...
700 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
701 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
702 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
703 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
704 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800705
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706 28 block ACSI disk (68k/Atari)
707 0 = /dev/ada First ACSI disk whole disk
708 16 = /dev/adb Second ACSI disk whole disk
709 32 = /dev/adc Third ACSI disk whole disk
710 ...
711 240 = /dev/adp 16th ACSI disk whole disk
712
713 Partitions are handled in the same way as for IDE
714 disks (see major number 3) except that the limit on
715 partitions is 15, like SCSI.
716
717 29 char Universal frame buffer
718 0 = /dev/fb0 First frame buffer
719 1 = /dev/fb1 Second frame buffer
720 ...
721 31 = /dev/fb31 32nd frame buffer
722
723 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
724 0 = /dev/aztcd Aztech CD-ROM
725
726 30 char iBCS-2 compatibility devices
727 0 = /dev/socksys Socket access
728 1 = /dev/spx SVR3 local X interface
729 32 = /dev/inet/ip Network access
730 33 = /dev/inet/icmp
731 34 = /dev/inet/ggp
732 35 = /dev/inet/ipip
733 36 = /dev/inet/tcp
734 37 = /dev/inet/egp
735 38 = /dev/inet/pup
736 39 = /dev/inet/udp
737 40 = /dev/inet/idp
738 41 = /dev/inet/rawip
739
740 Additionally, iBCS-2 requires the following links:
741
742 /dev/ip -> /dev/inet/ip
743 /dev/icmp -> /dev/inet/icmp
744 /dev/ggp -> /dev/inet/ggp
745 /dev/ipip -> /dev/inet/ipip
746 /dev/tcp -> /dev/inet/tcp
747 /dev/egp -> /dev/inet/egp
748 /dev/pup -> /dev/inet/pup
749 /dev/udp -> /dev/inet/udp
750 /dev/idp -> /dev/inet/idp
751 /dev/rawip -> /dev/inet/rawip
752 /dev/inet/arp -> /dev/inet/udp
753 /dev/inet/rip -> /dev/inet/udp
754 /dev/nfsd -> /dev/socksys
755 /dev/X0R -> /dev/null (? apparently not required ?)
756
757 30 block Philips LMS CM-205 CD-ROM
758 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
759
760 /dev/lmscd is an older name for this device. This
761 driver does not work with the CM-205MS CD-ROM.
762
763 31 char MPU-401 MIDI
764 0 = /dev/mpu401data MPU-401 data port
765 1 = /dev/mpu401stat MPU-401 status port
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800766
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767 31 block ROM/flash memory card
768 0 = /dev/rom0 First ROM card (rw)
769 ...
770 7 = /dev/rom7 Eighth ROM card (rw)
771 8 = /dev/rrom0 First ROM card (ro)
772 ...
773 15 = /dev/rrom7 Eighth ROM card (ro)
774 16 = /dev/flash0 First flash memory card (rw)
775 ...
776 23 = /dev/flash7 Eighth flash memory card (rw)
777 24 = /dev/rflash0 First flash memory card (ro)
778 ...
779 31 = /dev/rflash7 Eighth flash memory card (ro)
780
781 The read-write (rw) devices support back-caching
782 written data in RAM, as well as writing to flash RAM
783 devices. The read-only devices (ro) support reading
784 only.
785
786 32 char Specialix serial card
787 0 = /dev/ttyX0 First Specialix port
788 1 = /dev/ttyX1 Second Specialix port
789 ...
790 32 block Philips LMS CM-206 CD-ROM
791 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
792
793 33 char Specialix serial card - alternate devices
794 0 = /dev/cux0 Callout device for ttyX0
795 1 = /dev/cux1 Callout device for ttyX1
796 ...
797 33 block Third IDE hard disk/CD-ROM interface
798 0 = /dev/hde Master: whole disk (or CD-ROM)
799 64 = /dev/hdf Slave: whole disk (or CD-ROM)
800
801 Partitions are handled the same way as for the first
802 interface (see major number 3).
803
804 34 char Z8530 HDLC driver
805 0 = /dev/scc0 First Z8530, first port
806 1 = /dev/scc1 First Z8530, second port
807 2 = /dev/scc2 Second Z8530, first port
808 3 = /dev/scc3 Second Z8530, second port
809 ...
810
811 In a previous version these devices were named
812 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
813 on.
814
815 34 block Fourth IDE hard disk/CD-ROM interface
816 0 = /dev/hdg Master: whole disk (or CD-ROM)
817 64 = /dev/hdh Slave: whole disk (or CD-ROM)
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800818
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819 Partitions are handled the same way as for the first
820 interface (see major number 3).
821
822 35 char tclmidi MIDI driver
823 0 = /dev/midi0 First MIDI port, kernel timed
824 1 = /dev/midi1 Second MIDI port, kernel timed
825 2 = /dev/midi2 Third MIDI port, kernel timed
826 3 = /dev/midi3 Fourth MIDI port, kernel timed
827 64 = /dev/rmidi0 First MIDI port, untimed
828 65 = /dev/rmidi1 Second MIDI port, untimed
829 66 = /dev/rmidi2 Third MIDI port, untimed
830 67 = /dev/rmidi3 Fourth MIDI port, untimed
831 128 = /dev/smpte0 First MIDI port, SMPTE timed
832 129 = /dev/smpte1 Second MIDI port, SMPTE timed
833 130 = /dev/smpte2 Third MIDI port, SMPTE timed
834 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800835
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836 35 block Slow memory ramdisk
837 0 = /dev/slram Slow memory ramdisk
838
839 36 char Netlink support
840 0 = /dev/route Routing, device updates, kernel to user
841 1 = /dev/skip enSKIP security cache control
842 3 = /dev/fwmonitor Firewall packet copies
843 16 = /dev/tap0 First Ethertap device
844 ...
845 31 = /dev/tap15 16th Ethertap device
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800846
Paul Gortmakerbb8187d2012-05-17 19:06:13 -0400847 36 block OBSOLETE (was MCA ESDI hard disk)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848
849 37 char IDE tape
850 0 = /dev/ht0 First IDE tape
851 1 = /dev/ht1 Second IDE tape
852 ...
853 128 = /dev/nht0 First IDE tape, no rewind-on-close
854 129 = /dev/nht1 Second IDE tape, no rewind-on-close
855 ...
856
857 Currently, only one IDE tape drive is supported.
858
859 37 block Zorro II ramdisk
860 0 = /dev/z2ram Zorro II ramdisk
861
862 38 char Myricom PCI Myrinet board
863 0 = /dev/mlanai0 First Myrinet board
864 1 = /dev/mlanai1 Second Myrinet board
865 ...
866
867 This device is used for status query, board control
868 and "user level packet I/O." This board is also
869 accessible as a standard networking "eth" device.
870
Alan Cox04c860c2009-04-03 14:50:52 +0100871 38 block OBSOLETE (was Linux/AP+)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872
873 39 char ML-16P experimental I/O board
874 0 = /dev/ml16pa-a0 First card, first analog channel
875 1 = /dev/ml16pa-a1 First card, second analog channel
876 ...
877 15 = /dev/ml16pa-a15 First card, 16th analog channel
878 16 = /dev/ml16pa-d First card, digital lines
879 17 = /dev/ml16pa-c0 First card, first counter/timer
880 18 = /dev/ml16pa-c1 First card, second counter/timer
881 19 = /dev/ml16pa-c2 First card, third counter/timer
882 32 = /dev/ml16pb-a0 Second card, first analog channel
883 33 = /dev/ml16pb-a1 Second card, second analog channel
884 ...
885 47 = /dev/ml16pb-a15 Second card, 16th analog channel
886 48 = /dev/ml16pb-d Second card, digital lines
887 49 = /dev/ml16pb-c0 Second card, first counter/timer
888 50 = /dev/ml16pb-c1 Second card, second counter/timer
889 51 = /dev/ml16pb-c2 Second card, third counter/timer
890 ...
Alan Cox04c860c2009-04-03 14:50:52 +0100891 39 block
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892
Alan Cox04c860c2009-04-03 14:50:52 +0100893 40 char
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800894
Alan Cox04c860c2009-04-03 14:50:52 +0100895 40 block
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896
897 41 char Yet Another Micro Monitor
898 0 = /dev/yamm Yet Another Micro Monitor
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800899
Alan Cox04c860c2009-04-03 14:50:52 +0100900 41 block
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901
902 42 char Demo/sample use
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800903
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904 42 block Demo/sample use
905
906 This number is intended for use in sample code, as
907 well as a general "example" device number. It
908 should never be used for a device driver that is being
909 distributed; either obtain an official number or use
910 the local/experimental range. The sudden addition or
911 removal of a driver with this number should not cause
912 ill effects to the system (bugs excepted.)
913
914 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
915 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
916
917 43 char isdn4linux virtual modem
918 0 = /dev/ttyI0 First virtual modem
919 ...
920 63 = /dev/ttyI63 64th virtual modem
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800921
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922 43 block Network block devices
923 0 = /dev/nb0 First network block device
924 1 = /dev/nb1 Second network block device
925 ...
926
927 Network Block Device is somehow similar to loopback
928 devices: If you read from it, it sends packet across
929 network asking server for data. If you write to it, it
930 sends packet telling server to write. It could be used
931 to mounting filesystems over the net, swapping over
932 the net, implementing block device in userland etc.
933
934 44 char isdn4linux virtual modem - alternate devices
935 0 = /dev/cui0 Callout device for ttyI0
936 ...
937 63 = /dev/cui63 Callout device for ttyI63
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800938
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939 44 block Flash Translation Layer (FTL) filesystems
940 0 = /dev/ftla FTL on first Memory Technology Device
941 16 = /dev/ftlb FTL on second Memory Technology Device
942 32 = /dev/ftlc FTL on third Memory Technology Device
943 ...
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800944 240 = /dev/ftlp FTL on 16th Memory Technology Device
Linus Torvalds1da177e2005-04-16 15:20:36 -0700945
946 Partitions are handled in the same way as for IDE
Jan Engelhardt11420212006-06-23 02:05:34 -0700947 disks (see major number 3) except that the partition
Linus Torvalds1da177e2005-04-16 15:20:36 -0700948 limit is 15 rather than 63 per disk (same as SCSI.)
949
950 45 char isdn4linux ISDN BRI driver
951 0 = /dev/isdn0 First virtual B channel raw data
952 ...
953 63 = /dev/isdn63 64th virtual B channel raw data
954 64 = /dev/isdnctrl0 First channel control/debug
955 ...
956 127 = /dev/isdnctrl63 64th channel control/debug
957
958 128 = /dev/ippp0 First SyncPPP device
959 ...
960 191 = /dev/ippp63 64th SyncPPP device
961
962 255 = /dev/isdninfo ISDN monitor interface
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -0800963
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964 45 block Parallel port IDE disk devices
965 0 = /dev/pda First parallel port IDE disk
966 16 = /dev/pdb Second parallel port IDE disk
967 32 = /dev/pdc Third parallel port IDE disk
968 48 = /dev/pdd Fourth parallel port IDE disk
969
970 Partitions are handled in the same way as for IDE
971 disks (see major number 3) except that the partition
972 limit is 15 rather than 63 per disk.
973
974 46 char Comtrol Rocketport serial card
975 0 = /dev/ttyR0 First Rocketport port
976 1 = /dev/ttyR1 Second Rocketport port
977 ...
978 46 block Parallel port ATAPI CD-ROM devices
979 0 = /dev/pcd0 First parallel port ATAPI CD-ROM
980 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
981 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
982 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
983
984 47 char Comtrol Rocketport serial card - alternate devices
985 0 = /dev/cur0 Callout device for ttyR0
986 1 = /dev/cur1 Callout device for ttyR1
987 ...
988 47 block Parallel port ATAPI disk devices
989 0 = /dev/pf0 First parallel port ATAPI disk
990 1 = /dev/pf1 Second parallel port ATAPI disk
991 2 = /dev/pf2 Third parallel port ATAPI disk
992 3 = /dev/pf3 Fourth parallel port ATAPI disk
993
994 This driver is intended for floppy disks and similar
995 devices and hence does not support partitioning.
996
997 48 char SDL RISCom serial card
998 0 = /dev/ttyL0 First RISCom port
999 1 = /dev/ttyL1 Second RISCom port
1000 ...
1001 48 block Mylex DAC960 PCI RAID controller; first controller
1002 0 = /dev/rd/c0d0 First disk, whole disk
1003 8 = /dev/rd/c0d1 Second disk, whole disk
1004 ...
1005 248 = /dev/rd/c0d31 32nd disk, whole disk
1006
1007 For partitions add:
1008 0 = /dev/rd/c?d? Whole disk
1009 1 = /dev/rd/c?d?p1 First partition
1010 ...
1011 7 = /dev/rd/c?d?p7 Seventh partition
1012
1013 49 char SDL RISCom serial card - alternate devices
1014 0 = /dev/cul0 Callout device for ttyL0
1015 1 = /dev/cul1 Callout device for ttyL1
1016 ...
1017 49 block Mylex DAC960 PCI RAID controller; second controller
1018 0 = /dev/rd/c1d0 First disk, whole disk
1019 8 = /dev/rd/c1d1 Second disk, whole disk
1020 ...
1021 248 = /dev/rd/c1d31 32nd disk, whole disk
1022
1023 Partitions are handled as for major 48.
1024
1025 50 char Reserved for GLINT
1026
1027 50 block Mylex DAC960 PCI RAID controller; third controller
1028 0 = /dev/rd/c2d0 First disk, whole disk
1029 8 = /dev/rd/c2d1 Second disk, whole disk
1030 ...
1031 248 = /dev/rd/c2d31 32nd disk, whole disk
1032
1033 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1034 0 = /dev/bc0 First Baycom radio modem
1035 1 = /dev/bc1 Second Baycom radio modem
1036 ...
1037 51 block Mylex DAC960 PCI RAID controller; fourth controller
1038 0 = /dev/rd/c3d0 First disk, whole disk
1039 8 = /dev/rd/c3d1 Second disk, whole disk
1040 ...
1041 248 = /dev/rd/c3d31 32nd disk, whole disk
1042
1043 Partitions are handled as for major 48.
1044
1045 52 char Spellcaster DataComm/BRI ISDN card
1046 0 = /dev/dcbri0 First DataComm card
1047 1 = /dev/dcbri1 Second DataComm card
1048 2 = /dev/dcbri2 Third DataComm card
1049 3 = /dev/dcbri3 Fourth DataComm card
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08001050
Linus Torvalds1da177e2005-04-16 15:20:36 -07001051 52 block Mylex DAC960 PCI RAID controller; fifth controller
1052 0 = /dev/rd/c4d0 First disk, whole disk
1053 8 = /dev/rd/c4d1 Second disk, whole disk
1054 ...
1055 248 = /dev/rd/c4d31 32nd disk, whole disk
1056
1057 Partitions are handled as for major 48.
1058
1059 53 char BDM interface for remote debugging MC683xx microcontrollers
1060 0 = /dev/pd_bdm0 PD BDM interface on lp0
1061 1 = /dev/pd_bdm1 PD BDM interface on lp1
1062 2 = /dev/pd_bdm2 PD BDM interface on lp2
1063 4 = /dev/icd_bdm0 ICD BDM interface on lp0
1064 5 = /dev/icd_bdm1 ICD BDM interface on lp1
1065 6 = /dev/icd_bdm2 ICD BDM interface on lp2
1066
1067 This device is used for the interfacing to the MC683xx
1068 microcontrollers via Background Debug Mode by use of a
1069 Parallel Port interface. PD is the Motorola Public
1070 Domain Interface and ICD is the commercial interface
1071 by P&E.
1072
1073 53 block Mylex DAC960 PCI RAID controller; sixth controller
1074 0 = /dev/rd/c5d0 First disk, whole disk
1075 8 = /dev/rd/c5d1 Second disk, whole disk
1076 ...
1077 248 = /dev/rd/c5d31 32nd disk, whole disk
1078
1079 Partitions are handled as for major 48.
1080
1081 54 char Electrocardiognosis Holter serial card
1082 0 = /dev/holter0 First Holter port
1083 1 = /dev/holter1 Second Holter port
1084 2 = /dev/holter2 Third Holter port
1085
1086 A custom serial card used by Electrocardiognosis SRL
1087 <mseritan@ottonel.pub.ro> to transfer data from Holter
1088 24-hour heart monitoring equipment.
1089
1090 54 block Mylex DAC960 PCI RAID controller; seventh controller
1091 0 = /dev/rd/c6d0 First disk, whole disk
1092 8 = /dev/rd/c6d1 Second disk, whole disk
1093 ...
1094 248 = /dev/rd/c6d31 32nd disk, whole disk
1095
1096 Partitions are handled as for major 48.
1097
1098 55 char DSP56001 digital signal processor
1099 0 = /dev/dsp56k First DSP56001
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08001100
Matt LaPlante5d3f0832006-11-30 05:21:10 +01001101 55 block Mylex DAC960 PCI RAID controller; eighth controller
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102 0 = /dev/rd/c7d0 First disk, whole disk
1103 8 = /dev/rd/c7d1 Second disk, whole disk
1104 ...
1105 248 = /dev/rd/c7d31 32nd disk, whole disk
1106
1107 Partitions are handled as for major 48.
1108
1109 56 char Apple Desktop Bus
1110 0 = /dev/adb ADB bus control
1111
1112 Additional devices will be added to this number, all
1113 starting with /dev/adb.
1114
1115 56 block Fifth IDE hard disk/CD-ROM interface
1116 0 = /dev/hdi Master: whole disk (or CD-ROM)
1117 64 = /dev/hdj Slave: whole disk (or CD-ROM)
1118
1119 Partitions are handled the same way as for the first
1120 interface (see major number 3).
1121
1122 57 char Hayes ESP serial card
1123 0 = /dev/ttyP0 First ESP port
1124 1 = /dev/ttyP1 Second ESP port
1125 ...
1126
1127 57 block Sixth IDE hard disk/CD-ROM interface
1128 0 = /dev/hdk Master: whole disk (or CD-ROM)
1129 64 = /dev/hdl Slave: whole disk (or CD-ROM)
1130
1131 Partitions are handled the same way as for the first
1132 interface (see major number 3).
1133
1134 58 char Hayes ESP serial card - alternate devices
1135 0 = /dev/cup0 Callout device for ttyP0
1136 1 = /dev/cup1 Callout device for ttyP1
1137 ...
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08001138
Linus Torvalds1da177e2005-04-16 15:20:36 -07001139 58 block Reserved for logical volume manager
1140
1141 59 char sf firewall package
1142 0 = /dev/firewall Communication with sf kernel module
1143
1144 59 block Generic PDA filesystem device
1145 0 = /dev/pda0 First PDA device
1146 1 = /dev/pda1 Second PDA device
1147 ...
1148
1149 The pda devices are used to mount filesystems on
1150 remote pda's (basically slow handheld machines with
1151 proprietary OS's and limited memory and storage
1152 running small fs translation drivers) through serial /
1153 IRDA / parallel links.
1154
1155 NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1156
1157 60-63 char LOCAL/EXPERIMENTAL USE
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08001158
Linus Torvalds1da177e2005-04-16 15:20:36 -07001159 60-63 block LOCAL/EXPERIMENTAL USE
1160 Allocated for local/experimental use. For devices not
1161 assigned official numbers, these ranges should be
1162 used in order to avoid conflicting with future assignments.
1163
1164 64 char ENskip kernel encryption package
1165 0 = /dev/enskip Communication with ENskip kernel module
1166
1167 64 block Scramdisk/DriveCrypt encrypted devices
1168 0 = /dev/scramdisk/master Master node for ioctls
1169 1 = /dev/scramdisk/1 First encrypted device
1170 2 = /dev/scramdisk/2 Second encrypted device
1171 ...
1172 255 = /dev/scramdisk/255 255th encrypted device
1173
1174 The filename of the encrypted container and the passwords
1175 are sent via ioctls (using the sdmount tool) to the master
1176 node which then activates them via one of the
Jan Engelhardt11420212006-06-23 02:05:34 -07001177 /dev/scramdisk/x nodes for loop mounting (all handled
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178 through the sdmount tool).
1179
1180 Requested by: andy@scramdisklinux.org
1181
1182 65 char Sundance "plink" Transputer boards (obsolete, unused)
1183 0 = /dev/plink0 First plink device
1184 1 = /dev/plink1 Second plink device
1185 2 = /dev/plink2 Third plink device
1186 3 = /dev/plink3 Fourth plink device
1187 64 = /dev/rplink0 First plink device, raw
1188 65 = /dev/rplink1 Second plink device, raw
1189 66 = /dev/rplink2 Third plink device, raw
1190 67 = /dev/rplink3 Fourth plink device, raw
1191 128 = /dev/plink0d First plink device, debug
1192 129 = /dev/plink1d Second plink device, debug
1193 130 = /dev/plink2d Third plink device, debug
1194 131 = /dev/plink3d Fourth plink device, debug
1195 192 = /dev/rplink0d First plink device, raw, debug
1196 193 = /dev/rplink1d Second plink device, raw, debug
1197 194 = /dev/rplink2d Third plink device, raw, debug
1198 195 = /dev/rplink3d Fourth plink device, raw, debug
1199
1200 This is a commercial driver; contact James Howes
1201 <jth@prosig.demon.co.uk> for information.
1202
1203 65 block SCSI disk devices (16-31)
1204 0 = /dev/sdq 17th SCSI disk whole disk
1205 16 = /dev/sdr 18th SCSI disk whole disk
1206 32 = /dev/sds 19th SCSI disk whole disk
1207 ...
1208 240 = /dev/sdaf 32nd SCSI disk whole disk
1209
1210 Partitions are handled in the same way as for IDE
1211 disks (see major number 3) except that the limit on
1212 partitions is 15.
1213
1214 66 char YARC PowerPC PCI coprocessor card
1215 0 = /dev/yppcpci0 First YARC card
1216 1 = /dev/yppcpci1 Second YARC card
1217 ...
1218
1219 66 block SCSI disk devices (32-47)
1220 0 = /dev/sdag 33th SCSI disk whole disk
1221 16 = /dev/sdah 34th SCSI disk whole disk
1222 32 = /dev/sdai 35th SCSI disk whole disk
1223 ...
1224 240 = /dev/sdav 48nd SCSI disk whole disk
1225
1226 Partitions are handled in the same way as for IDE
1227 disks (see major number 3) except that the limit on
1228 partitions is 15.
1229
1230 67 char Coda network file system
1231 0 = /dev/cfs0 Coda cache manager
1232
1233 See http://www.coda.cs.cmu.edu for information about Coda.
1234
1235 67 block SCSI disk devices (48-63)
1236 0 = /dev/sdaw 49th SCSI disk whole disk
1237 16 = /dev/sdax 50th SCSI disk whole disk
1238 32 = /dev/sday 51st SCSI disk whole disk
1239 ...
1240 240 = /dev/sdbl 64th SCSI disk whole disk
1241
1242 Partitions are handled in the same way as for IDE
1243 disks (see major number 3) except that the limit on
1244 partitions is 15.
1245
1246 68 char CAPI 2.0 interface
1247 0 = /dev/capi20 Control device
1248 1 = /dev/capi20.00 First CAPI 2.0 application
1249 2 = /dev/capi20.01 Second CAPI 2.0 application
1250 ...
1251 20 = /dev/capi20.19 19th CAPI 2.0 application
1252
1253 ISDN CAPI 2.0 driver for use with CAPI 2.0
1254 applications; currently supports the AVM B1 card.
1255
1256 68 block SCSI disk devices (64-79)
1257 0 = /dev/sdbm 65th SCSI disk whole disk
1258 16 = /dev/sdbn 66th SCSI disk whole disk
1259 32 = /dev/sdbo 67th SCSI disk whole disk
1260 ...
1261 240 = /dev/sdcb 80th SCSI disk whole disk
1262
1263 Partitions are handled in the same way as for IDE
1264 disks (see major number 3) except that the limit on
1265 partitions is 15.
1266
1267 69 char MA16 numeric accelerator card
1268 0 = /dev/ma16 Board memory access
1269
1270 69 block SCSI disk devices (80-95)
1271 0 = /dev/sdcc 81st SCSI disk whole disk
1272 16 = /dev/sdcd 82nd SCSI disk whole disk
1273 32 = /dev/sdce 83th SCSI disk whole disk
1274 ...
1275 240 = /dev/sdcr 96th SCSI disk whole disk
1276
1277 Partitions are handled in the same way as for IDE
1278 disks (see major number 3) except that the limit on
1279 partitions is 15.
1280
1281 70 char SpellCaster Protocol Services Interface
1282 0 = /dev/apscfg Configuration interface
1283 1 = /dev/apsauth Authentication interface
1284 2 = /dev/apslog Logging interface
1285 3 = /dev/apsdbg Debugging interface
1286 64 = /dev/apsisdn ISDN command interface
1287 65 = /dev/apsasync Async command interface
1288 128 = /dev/apsmon Monitor interface
1289
1290 70 block SCSI disk devices (96-111)
1291 0 = /dev/sdcs 97th SCSI disk whole disk
1292 16 = /dev/sdct 98th SCSI disk whole disk
1293 32 = /dev/sdcu 99th SCSI disk whole disk
1294 ...
1295 240 = /dev/sddh 112nd SCSI disk whole disk
1296
1297 Partitions are handled in the same way as for IDE
1298 disks (see major number 3) except that the limit on
1299 partitions is 15.
1300
1301 71 char Computone IntelliPort II serial card
1302 0 = /dev/ttyF0 IntelliPort II board 0, port 0
1303 1 = /dev/ttyF1 IntelliPort II board 0, port 1
1304 ...
1305 63 = /dev/ttyF63 IntelliPort II board 0, port 63
1306 64 = /dev/ttyF64 IntelliPort II board 1, port 0
1307 65 = /dev/ttyF65 IntelliPort II board 1, port 1
1308 ...
1309 127 = /dev/ttyF127 IntelliPort II board 1, port 63
1310 128 = /dev/ttyF128 IntelliPort II board 2, port 0
1311 129 = /dev/ttyF129 IntelliPort II board 2, port 1
1312 ...
1313 191 = /dev/ttyF191 IntelliPort II board 2, port 63
1314 192 = /dev/ttyF192 IntelliPort II board 3, port 0
1315 193 = /dev/ttyF193 IntelliPort II board 3, port 1
1316 ...
1317 255 = /dev/ttyF255 IntelliPort II board 3, port 63
1318
1319 71 block SCSI disk devices (112-127)
1320 0 = /dev/sddi 113th SCSI disk whole disk
1321 16 = /dev/sddj 114th SCSI disk whole disk
1322 32 = /dev/sddk 115th SCSI disk whole disk
1323 ...
1324 240 = /dev/sddx 128th SCSI disk whole disk
1325
1326 Partitions are handled in the same way as for IDE
1327 disks (see major number 3) except that the limit on
1328 partitions is 15.
1329
1330 72 char Computone IntelliPort II serial card - alternate devices
1331 0 = /dev/cuf0 Callout device for ttyF0
1332 1 = /dev/cuf1 Callout device for ttyF1
1333 ...
1334 63 = /dev/cuf63 Callout device for ttyF63
1335 64 = /dev/cuf64 Callout device for ttyF64
1336 65 = /dev/cuf65 Callout device for ttyF65
1337 ...
1338 127 = /dev/cuf127 Callout device for ttyF127
1339 128 = /dev/cuf128 Callout device for ttyF128
1340 129 = /dev/cuf129 Callout device for ttyF129
1341 ...
1342 191 = /dev/cuf191 Callout device for ttyF191
1343 192 = /dev/cuf192 Callout device for ttyF192
1344 193 = /dev/cuf193 Callout device for ttyF193
1345 ...
1346 255 = /dev/cuf255 Callout device for ttyF255
1347
1348 72 block Compaq Intelligent Drive Array, first controller
1349 0 = /dev/ida/c0d0 First logical drive whole disk
1350 16 = /dev/ida/c0d1 Second logical drive whole disk
1351 ...
1352 240 = /dev/ida/c0d15 16th logical drive whole disk
1353
1354 Partitions are handled the same way as for Mylex
1355 DAC960 (see major number 48) except that the limit on
1356 partitions is 15.
1357
1358 73 char Computone IntelliPort II serial card - control devices
1359 0 = /dev/ip2ipl0 Loadware device for board 0
1360 1 = /dev/ip2stat0 Status device for board 0
1361 4 = /dev/ip2ipl1 Loadware device for board 1
1362 5 = /dev/ip2stat1 Status device for board 1
1363 8 = /dev/ip2ipl2 Loadware device for board 2
1364 9 = /dev/ip2stat2 Status device for board 2
1365 12 = /dev/ip2ipl3 Loadware device for board 3
1366 13 = /dev/ip2stat3 Status device for board 3
1367
1368 73 block Compaq Intelligent Drive Array, second controller
1369 0 = /dev/ida/c1d0 First logical drive whole disk
1370 16 = /dev/ida/c1d1 Second logical drive whole disk
1371 ...
1372 240 = /dev/ida/c1d15 16th logical drive whole disk
1373
1374 Partitions are handled the same way as for Mylex
1375 DAC960 (see major number 48) except that the limit on
1376 partitions is 15.
1377
1378 74 char SCI bridge
1379 0 = /dev/SCI/0 SCI device 0
1380 1 = /dev/SCI/1 SCI device 1
1381 ...
1382
1383 Currently for Dolphin Interconnect Solutions' PCI-SCI
1384 bridge.
1385
1386 74 block Compaq Intelligent Drive Array, third controller
1387 0 = /dev/ida/c2d0 First logical drive whole disk
1388 16 = /dev/ida/c2d1 Second logical drive whole disk
1389 ...
1390 240 = /dev/ida/c2d15 16th logical drive whole disk
1391
1392 Partitions are handled the same way as for Mylex
1393 DAC960 (see major number 48) except that the limit on
1394 partitions is 15.
1395
1396 75 char Specialix IO8+ serial card
1397 0 = /dev/ttyW0 First IO8+ port, first card
1398 1 = /dev/ttyW1 Second IO8+ port, first card
1399 ...
1400 8 = /dev/ttyW8 First IO8+ port, second card
1401 ...
1402
1403 75 block Compaq Intelligent Drive Array, fourth controller
1404 0 = /dev/ida/c3d0 First logical drive whole disk
1405 16 = /dev/ida/c3d1 Second logical drive whole disk
1406 ...
1407 240 = /dev/ida/c3d15 16th logical drive whole disk
1408
1409 Partitions are handled the same way as for Mylex
1410 DAC960 (see major number 48) except that the limit on
1411 partitions is 15.
1412
1413 76 char Specialix IO8+ serial card - alternate devices
1414 0 = /dev/cuw0 Callout device for ttyW0
1415 1 = /dev/cuw1 Callout device for ttyW1
1416 ...
1417 8 = /dev/cuw8 Callout device for ttyW8
1418 ...
1419
1420 76 block Compaq Intelligent Drive Array, fifth controller
1421 0 = /dev/ida/c4d0 First logical drive whole disk
1422 16 = /dev/ida/c4d1 Second logical drive whole disk
1423 ...
1424 240 = /dev/ida/c4d15 16th logical drive whole disk
1425
1426 Partitions are handled the same way as for Mylex
1427 DAC960 (see major number 48) except that the limit on
1428 partitions is 15.
1429
1430
1431 77 char ComScire Quantum Noise Generator
1432 0 = /dev/qng ComScire Quantum Noise Generator
1433
1434 77 block Compaq Intelligent Drive Array, sixth controller
1435 0 = /dev/ida/c5d0 First logical drive whole disk
1436 16 = /dev/ida/c5d1 Second logical drive whole disk
1437 ...
1438 240 = /dev/ida/c5d15 16th logical drive whole disk
1439
1440 Partitions are handled the same way as for Mylex
1441 DAC960 (see major number 48) except that the limit on
1442 partitions is 15.
1443
Linus Torvalds1da177e2005-04-16 15:20:36 -07001444 78 char PAM Software's multimodem boards
1445 0 = /dev/ttyM0 First PAM modem
1446 1 = /dev/ttyM1 Second PAM modem
1447 ...
1448
1449 78 block Compaq Intelligent Drive Array, seventh controller
1450 0 = /dev/ida/c6d0 First logical drive whole disk
1451 16 = /dev/ida/c6d1 Second logical drive whole disk
1452 ...
1453 240 = /dev/ida/c6d15 16th logical drive whole disk
1454
1455 Partitions are handled the same way as for Mylex
1456 DAC960 (see major number 48) except that the limit on
1457 partitions is 15.
1458
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459 79 char PAM Software's multimodem boards - alternate devices
1460 0 = /dev/cum0 Callout device for ttyM0
1461 1 = /dev/cum1 Callout device for ttyM1
1462 ...
1463
Matt LaPlante5d3f0832006-11-30 05:21:10 +01001464 79 block Compaq Intelligent Drive Array, eighth controller
Linus Torvalds1da177e2005-04-16 15:20:36 -07001465 0 = /dev/ida/c7d0 First logical drive whole disk
1466 16 = /dev/ida/c7d1 Second logical drive whole disk
1467 ...
1468 240 = /dev/ida/c715 16th logical drive whole disk
1469
1470 Partitions are handled the same way as for Mylex
1471 DAC960 (see major number 48) except that the limit on
1472 partitions is 15.
1473
Linus Torvalds1da177e2005-04-16 15:20:36 -07001474 80 char Photometrics AT200 CCD camera
1475 0 = /dev/at200 Photometrics AT200 CCD camera
1476
1477 80 block I2O hard disk
1478 0 = /dev/i2o/hda First I2O hard disk, whole disk
1479 16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1480 ...
1481 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1482
1483 Partitions are handled in the same way as for IDE
1484 disks (see major number 3) except that the limit on
1485 partitions is 15.
1486
1487 81 char video4linux
1488 0 = /dev/video0 Video capture/overlay device
1489 ...
1490 63 = /dev/video63 Video capture/overlay device
1491 64 = /dev/radio0 Radio device
1492 ...
1493 127 = /dev/radio63 Radio device
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494 224 = /dev/vbi0 Vertical blank interrupt
1495 ...
1496 255 = /dev/vbi31 Vertical blank interrupt
1497
1498 81 block I2O hard disk
1499 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1500 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1501 ...
1502 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1503
1504 Partitions are handled in the same way as for IDE
1505 disks (see major number 3) except that the limit on
1506 partitions is 15.
1507
1508 82 char WiNRADiO communications receiver card
1509 0 = /dev/winradio0 First WiNRADiO card
1510 1 = /dev/winradio1 Second WiNRADiO card
1511 ...
1512
1513 The driver and documentation may be obtained from
Justin P. Mattock0ea6e612010-07-23 20:51:24 -07001514 http://www.winradio.com/
Linus Torvalds1da177e2005-04-16 15:20:36 -07001515
1516 82 block I2O hard disk
1517 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1518 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1519 ...
1520 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1521
1522 Partitions are handled in the same way as for IDE
1523 disks (see major number 3) except that the limit on
1524 partitions is 15.
1525
1526 83 char Matrox mga_vid video driver
1527 0 = /dev/mga_vid0 1st video card
1528 1 = /dev/mga_vid1 2nd video card
1529 2 = /dev/mga_vid2 3rd video card
1530 ...
1531 15 = /dev/mga_vid15 16th video card
1532
1533 83 block I2O hard disk
1534 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1535 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1536 ...
1537 240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1538
1539 Partitions are handled in the same way as for IDE
1540 disks (see major number 3) except that the limit on
1541 partitions is 15.
1542
1543 84 char Ikon 1011[57] Versatec Greensheet Interface
1544 0 = /dev/ihcp0 First Greensheet port
1545 1 = /dev/ihcp1 Second Greensheet port
1546
1547 84 block I2O hard disk
1548 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1549 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1550 ...
1551 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1552
1553 Partitions are handled in the same way as for IDE
1554 disks (see major number 3) except that the limit on
1555 partitions is 15.
1556
1557 85 char Linux/SGI shared memory input queue
1558 0 = /dev/shmiq Master shared input queue
1559 1 = /dev/qcntl0 First device pushed
1560 2 = /dev/qcntl1 Second device pushed
1561 ...
1562
1563 85 block I2O hard disk
1564 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1565 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1566 ...
1567 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1568
1569 Partitions are handled in the same way as for IDE
1570 disks (see major number 3) except that the limit on
1571 partitions is 15.
1572
1573 86 char SCSI media changer
1574 0 = /dev/sch0 First SCSI media changer
1575 1 = /dev/sch1 Second SCSI media changer
1576 ...
1577
1578 86 block I2O hard disk
1579 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1580 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1581 ...
1582 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1583
1584 Partitions are handled in the same way as for IDE
1585 disks (see major number 3) except that the limit on
1586 partitions is 15.
1587
1588 87 char Sony Control-A1 stereo control bus
1589 0 = /dev/controla0 First device on chain
1590 1 = /dev/controla1 Second device on chain
1591 ...
1592
1593 87 block I2O hard disk
1594 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1595 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1596 ...
1597 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1598
1599 Partitions are handled in the same way as for IDE
1600 disks (see major number 3) except that the limit on
1601 partitions is 15.
1602
1603 88 char COMX synchronous serial card
1604 0 = /dev/comx0 COMX channel 0
1605 1 = /dev/comx1 COMX channel 1
1606 ...
1607
1608 88 block Seventh IDE hard disk/CD-ROM interface
1609 0 = /dev/hdm Master: whole disk (or CD-ROM)
1610 64 = /dev/hdn Slave: whole disk (or CD-ROM)
1611
1612 Partitions are handled the same way as for the first
1613 interface (see major number 3).
1614
1615 89 char I2C bus interface
1616 0 = /dev/i2c-0 First I2C adapter
1617 1 = /dev/i2c-1 Second I2C adapter
1618 ...
1619
1620 89 block Eighth IDE hard disk/CD-ROM interface
1621 0 = /dev/hdo Master: whole disk (or CD-ROM)
1622 64 = /dev/hdp Slave: whole disk (or CD-ROM)
1623
1624 Partitions are handled the same way as for the first
1625 interface (see major number 3).
1626
1627 90 char Memory Technology Device (RAM, ROM, Flash)
1628 0 = /dev/mtd0 First MTD (rw)
1629 1 = /dev/mtdr0 First MTD (ro)
1630 ...
1631 30 = /dev/mtd15 16th MTD (rw)
1632 31 = /dev/mtdr15 16th MTD (ro)
1633
1634 90 block Ninth IDE hard disk/CD-ROM interface
1635 0 = /dev/hdq Master: whole disk (or CD-ROM)
1636 64 = /dev/hdr Slave: whole disk (or CD-ROM)
1637
1638 Partitions are handled the same way as for the first
1639 interface (see major number 3).
1640
1641 91 char CAN-Bus devices
1642 0 = /dev/can0 First CAN-Bus controller
1643 1 = /dev/can1 Second CAN-Bus controller
1644 ...
1645
1646 91 block Tenth IDE hard disk/CD-ROM interface
1647 0 = /dev/hds Master: whole disk (or CD-ROM)
1648 64 = /dev/hdt Slave: whole disk (or CD-ROM)
1649
1650 Partitions are handled the same way as for the first
1651 interface (see major number 3).
1652
1653 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1654
1655 92 block PPDD encrypted disk driver
1656 0 = /dev/ppdd0 First encrypted disk
1657 1 = /dev/ppdd1 Second encrypted disk
1658 ...
1659
1660 Partitions are handled in the same way as for IDE
1661 disks (see major number 3) except that the limit on
1662 partitions is 15.
1663
Alan Cox04c860c2009-04-03 14:50:52 +01001664 93 char
Linus Torvalds1da177e2005-04-16 15:20:36 -07001665
1666 93 block NAND Flash Translation Layer filesystem
1667 0 = /dev/nftla First NFTL layer
1668 16 = /dev/nftlb Second NFTL layer
1669 ...
1670 240 = /dev/nftlp 16th NTFL layer
1671
Alan Cox04c860c2009-04-03 14:50:52 +01001672 94 char
Linus Torvalds1da177e2005-04-16 15:20:36 -07001673
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08001674 94 block IBM S/390 DASD block storage
Linus Torvalds1da177e2005-04-16 15:20:36 -07001675 0 = /dev/dasda First DASD device, major
1676 1 = /dev/dasda1 First DASD device, block 1
1677 2 = /dev/dasda2 First DASD device, block 2
1678 3 = /dev/dasda3 First DASD device, block 3
1679 4 = /dev/dasdb Second DASD device, major
1680 5 = /dev/dasdb1 Second DASD device, block 1
1681 6 = /dev/dasdb2 Second DASD device, block 2
1682 7 = /dev/dasdb3 Second DASD device, block 3
1683 ...
1684
1685 95 char IP filter
1686 0 = /dev/ipl Filter control device/log file
1687 1 = /dev/ipnat NAT control device/log file
1688 2 = /dev/ipstate State information log file
1689 3 = /dev/ipauth Authentication control device/log file
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08001690 ...
Linus Torvalds1da177e2005-04-16 15:20:36 -07001691
1692 96 char Parallel port ATAPI tape devices
1693 0 = /dev/pt0 First parallel port ATAPI tape
1694 1 = /dev/pt1 Second parallel port ATAPI tape
1695 ...
1696 128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1697 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1698 ...
1699
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08001700 96 block Inverse NAND Flash Translation Layer
Linus Torvalds1da177e2005-04-16 15:20:36 -07001701 0 = /dev/inftla First INFTL layer
1702 16 = /dev/inftlb Second INFTL layer
1703 ...
1704 240 = /dev/inftlp 16th INTFL layer
1705
1706 97 char Parallel port generic ATAPI interface
1707 0 = /dev/pg0 First parallel port ATAPI device
1708 1 = /dev/pg1 Second parallel port ATAPI device
1709 2 = /dev/pg2 Third parallel port ATAPI device
1710 3 = /dev/pg3 Fourth parallel port ATAPI device
1711
1712 These devices support the same API as the generic SCSI
1713 devices.
1714
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715 98 char Control and Measurement Device (comedi)
1716 0 = /dev/comedi0 First comedi device
1717 1 = /dev/comedi1 Second comedi device
1718 ...
1719
Justin P. Mattock0ea6e612010-07-23 20:51:24 -07001720 See http://stm.lbl.gov/comedi.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001721
1722 98 block User-mode virtual block device
1723 0 = /dev/ubda First user-mode block device
1724 16 = /dev/udbb Second user-mode block device
1725 ...
1726
1727 Partitions are handled in the same way as for IDE
1728 disks (see major number 3) except that the limit on
1729 partitions is 15.
1730
1731 This device is used by the user-mode virtual kernel port.
1732
1733 99 char Raw parallel ports
1734 0 = /dev/parport0 First parallel port
1735 1 = /dev/parport1 Second parallel port
1736 ...
1737
1738 99 block JavaStation flash disk
1739 0 = /dev/jsfd JavaStation flash disk
1740
1741100 char Telephony for Linux
1742 0 = /dev/phone0 First telephony device
1743 1 = /dev/phone1 Second telephony device
1744 ...
1745
1746101 char Motorola DSP 56xxx board
1747 0 = /dev/mdspstat Status information
1748 1 = /dev/mdsp1 First DSP board I/O controls
1749 ...
1750 16 = /dev/mdsp16 16th DSP board I/O controls
1751
1752101 block AMI HyperDisk RAID controller
1753 0 = /dev/amiraid/ar0 First array whole disk
1754 16 = /dev/amiraid/ar1 Second array whole disk
1755 ...
1756 240 = /dev/amiraid/ar15 16th array whole disk
1757
1758 For each device, partitions are added as:
1759 0 = /dev/amiraid/ar? Whole disk
1760 1 = /dev/amiraid/ar?p1 First partition
1761 2 = /dev/amiraid/ar?p2 Second partition
1762 ...
1763 15 = /dev/amiraid/ar?p15 15th partition
1764
Alan Cox04c860c2009-04-03 14:50:52 +01001765102 char
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766
1767102 block Compressed block device
1768 0 = /dev/cbd/a First compressed block device, whole device
1769 16 = /dev/cbd/b Second compressed block device, whole device
1770 ...
1771 240 = /dev/cbd/p 16th compressed block device, whole device
1772
1773 Partitions are handled in the same way as for IDE
1774 disks (see major number 3) except that the limit on
1775 partitions is 15.
1776
1777103 char Arla network file system
1778 0 = /dev/nnpfs0 First NNPFS device
1779 1 = /dev/nnpfs1 Second NNPFS device
1780
1781 Arla is a free clone of the Andrew File System, AFS.
1782 The NNPFS device gives user mode filesystem
1783 implementations a kernel presence for caching and easy
1784 mounting. For more information about the project,
1785 write to <arla-drinkers@stacken.kth.se> or see
1786 http://www.stacken.kth.se/project/arla/
1787
1788103 block Audit device
1789 0 = /dev/audit Audit device
1790
1791104 char Flash BIOS support
1792
1793104 block Compaq Next Generation Drive Array, first controller
1794 0 = /dev/cciss/c0d0 First logical drive, whole disk
1795 16 = /dev/cciss/c0d1 Second logical drive, whole disk
1796 ...
1797 240 = /dev/cciss/c0d15 16th logical drive, whole disk
1798
1799 Partitions are handled the same way as for Mylex
1800 DAC960 (see major number 48) except that the limit on
1801 partitions is 15.
1802
1803105 char Comtrol VS-1000 serial controller
1804 0 = /dev/ttyV0 First VS-1000 port
1805 1 = /dev/ttyV1 Second VS-1000 port
1806 ...
1807
1808105 block Compaq Next Generation Drive Array, second controller
1809 0 = /dev/cciss/c1d0 First logical drive, whole disk
1810 16 = /dev/cciss/c1d1 Second logical drive, whole disk
1811 ...
1812 240 = /dev/cciss/c1d15 16th logical drive, whole disk
1813
1814 Partitions are handled the same way as for Mylex
1815 DAC960 (see major number 48) except that the limit on
1816 partitions is 15.
1817
1818106 char Comtrol VS-1000 serial controller - alternate devices
1819 0 = /dev/cuv0 First VS-1000 port
1820 1 = /dev/cuv1 Second VS-1000 port
1821 ...
1822
1823106 block Compaq Next Generation Drive Array, third controller
1824 0 = /dev/cciss/c2d0 First logical drive, whole disk
1825 16 = /dev/cciss/c2d1 Second logical drive, whole disk
1826 ...
1827 240 = /dev/cciss/c2d15 16th logical drive, whole disk
1828
1829 Partitions are handled the same way as for Mylex
1830 DAC960 (see major number 48) except that the limit on
1831 partitions is 15.
1832
1833107 char 3Dfx Voodoo Graphics device
1834 0 = /dev/3dfx Primary 3Dfx graphics device
1835
1836107 block Compaq Next Generation Drive Array, fourth controller
1837 0 = /dev/cciss/c3d0 First logical drive, whole disk
1838 16 = /dev/cciss/c3d1 Second logical drive, whole disk
1839 ...
1840 240 = /dev/cciss/c3d15 16th logical drive, whole disk
1841
1842 Partitions are handled the same way as for Mylex
1843 DAC960 (see major number 48) except that the limit on
1844 partitions is 15.
1845
1846108 char Device independent PPP interface
1847 0 = /dev/ppp Device independent PPP interface
1848
1849108 block Compaq Next Generation Drive Array, fifth controller
1850 0 = /dev/cciss/c4d0 First logical drive, whole disk
1851 16 = /dev/cciss/c4d1 Second logical drive, whole disk
1852 ...
1853 240 = /dev/cciss/c4d15 16th logical drive, whole disk
1854
1855 Partitions are handled the same way as for Mylex
1856 DAC960 (see major number 48) except that the limit on
1857 partitions is 15.
1858
1859109 char Reserved for logical volume manager
1860
1861109 block Compaq Next Generation Drive Array, sixth controller
1862 0 = /dev/cciss/c5d0 First logical drive, whole disk
1863 16 = /dev/cciss/c5d1 Second logical drive, whole disk
1864 ...
1865 240 = /dev/cciss/c5d15 16th logical drive, whole disk
1866
1867 Partitions are handled the same way as for Mylex
1868 DAC960 (see major number 48) except that the limit on
1869 partitions is 15.
1870
1871110 char miroMEDIA Surround board
1872 0 = /dev/srnd0 First miroMEDIA Surround board
1873 1 = /dev/srnd1 Second miroMEDIA Surround board
1874 ...
1875
1876110 block Compaq Next Generation Drive Array, seventh controller
1877 0 = /dev/cciss/c6d0 First logical drive, whole disk
1878 16 = /dev/cciss/c6d1 Second logical drive, whole disk
1879 ...
1880 240 = /dev/cciss/c6d15 16th logical drive, whole disk
1881
1882 Partitions are handled the same way as for Mylex
1883 DAC960 (see major number 48) except that the limit on
1884 partitions is 15.
1885
Alan Cox04c860c2009-04-03 14:50:52 +01001886111 char
Linus Torvalds1da177e2005-04-16 15:20:36 -07001887
Matt LaPlante5d3f0832006-11-30 05:21:10 +01001888111 block Compaq Next Generation Drive Array, eighth controller
Linus Torvalds1da177e2005-04-16 15:20:36 -07001889 0 = /dev/cciss/c7d0 First logical drive, whole disk
1890 16 = /dev/cciss/c7d1 Second logical drive, whole disk
1891 ...
1892 240 = /dev/cciss/c7d15 16th logical drive, whole disk
1893
1894 Partitions are handled the same way as for Mylex
1895 DAC960 (see major number 48) except that the limit on
1896 partitions is 15.
1897
1898112 char ISI serial card
1899 0 = /dev/ttyM0 First ISI port
1900 1 = /dev/ttyM1 Second ISI port
1901 ...
1902
1903 There is currently a device-naming conflict between
1904 these and PAM multimodems (major 78).
1905
1906112 block IBM iSeries virtual disk
1907 0 = /dev/iseries/vda First virtual disk, whole disk
1908 8 = /dev/iseries/vdb Second virtual disk, whole disk
1909 ...
1910 200 = /dev/iseries/vdz 26th virtual disk, whole disk
1911 208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1912 ...
1913 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1914
1915 Partitions are handled in the same way as for IDE
1916 disks (see major number 3) except that the limit on
1917 partitions is 7.
1918
1919113 char ISI serial card - alternate devices
1920 0 = /dev/cum0 Callout device for ttyM0
1921 1 = /dev/cum1 Callout device for ttyM1
1922 ...
1923
1924113 block IBM iSeries virtual CD-ROM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001925 0 = /dev/iseries/vcda First virtual CD-ROM
1926 1 = /dev/iseries/vcdb Second virtual CD-ROM
1927 ...
1928
1929114 char Picture Elements ISE board
1930 0 = /dev/ise0 First ISE board
1931 1 = /dev/ise1 Second ISE board
1932 ...
1933 128 = /dev/isex0 Control node for first ISE board
1934 129 = /dev/isex1 Control node for second ISE board
1935 ...
1936
1937 The ISE board is an embedded computer, optimized for
1938 image processing. The /dev/iseN nodes are the general
1939 I/O access to the board, the /dev/isex0 nodes command
1940 nodes used to control the board.
1941
1942114 block IDE BIOS powered software RAID interfaces such as the
1943 Promise Fastrak
1944
1945 0 = /dev/ataraid/d0
1946 1 = /dev/ataraid/d0p1
1947 2 = /dev/ataraid/d0p2
1948 ...
1949 16 = /dev/ataraid/d1
1950 17 = /dev/ataraid/d1p1
1951 18 = /dev/ataraid/d1p2
1952 ...
1953 255 = /dev/ataraid/d15p15
1954
1955 Partitions are handled in the same way as for IDE
1956 disks (see major number 3) except that the limit on
1957 partitions is 15.
1958
1959115 char TI link cable devices (115 was formerly the console driver speaker)
1960 0 = /dev/tipar0 Parallel cable on first parallel port
1961 ...
1962 7 = /dev/tipar7 Parallel cable on seventh parallel port
1963
1964 8 = /dev/tiser0 Serial cable on first serial port
1965 ...
1966 15 = /dev/tiser7 Serial cable on seventh serial port
1967
1968 16 = /dev/tiusb0 First USB cable
1969 ...
1970 47 = /dev/tiusb31 32nd USB cable
1971
1972115 block NetWare (NWFS) Devices (0-255)
1973
1974 The NWFS (NetWare) devices are used to present a
1975 collection of NetWare Mirror Groups or NetWare
1976 Partitions as a logical storage segment for
1977 use in mounting NetWare volumes. A maximum of
1978 256 NetWare volumes can be supported in a single
1979 machine.
1980
Justin P. Mattock0ea6e612010-07-23 20:51:24 -07001981 http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
Linus Torvalds1da177e2005-04-16 15:20:36 -07001982
1983 0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
1984 1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
1985 2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
1986 ...
1987 255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
1988
1989116 char Advanced Linux Sound Driver (ALSA)
1990
1991116 block MicroMemory battery backed RAM adapter (NVRAM)
Matt LaPlante992caac2006-10-03 22:52:05 +02001992 Supports 16 boards, 15 partitions each.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001993 Requested by neilb at cse.unsw.edu.au.
1994
1995 0 = /dev/umem/d0 Whole of first board
1996 1 = /dev/umem/d0p1 First partition of first board
1997 2 = /dev/umem/d0p2 Second partition of first board
1998 15 = /dev/umem/d0p15 15th partition of first board
1999
2000 16 = /dev/umem/d1 Whole of second board
2001 17 = /dev/umem/d1p1 First partition of second board
2002 ...
2003 255= /dev/umem/d15p15 15th partition of 16th board.
2004
2005117 char COSA/SRP synchronous serial card
2006 0 = /dev/cosa0c0 1st board, 1st channel
2007 1 = /dev/cosa0c1 1st board, 2nd channel
2008 ...
2009 16 = /dev/cosa1c0 2nd board, 1st channel
2010 17 = /dev/cosa1c1 2nd board, 2nd channel
2011 ...
2012
2013117 block Enterprise Volume Management System (EVMS)
2014
2015 The EVMS driver uses a layered, plug-in model to provide
2016 unparalleled flexibility and extensibility in managing
2017 storage. This allows for easy expansion or customization
2018 of various levels of volume management. Requested by
2019 Mark Peloquin (peloquin at us.ibm.com).
2020
2021 Note: EVMS populates and manages all the devnodes in
2022 /dev/evms.
2023
2024 http://sf.net/projects/evms
2025
2026 0 = /dev/evms/block_device EVMS block device
2027 1 = /dev/evms/legacyname1 First EVMS legacy device
2028 2 = /dev/evms/legacyname2 Second EVMS legacy device
2029 ...
2030 Both ranges can grow (down or up) until they meet.
2031 ...
2032 254 = /dev/evms/EVMSname2 Second EVMS native device
2033 255 = /dev/evms/EVMSname1 First EVMS native device
2034
2035 Note: legacyname(s) are derived from the normal legacy
2036 device names. For example, /dev/hda5 would become
2037 /dev/evms/hda5.
2038
2039118 char IBM Cryptographic Accelerator
2040 0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2041 1 = /dev/ica0 IBMCA Device 0
2042 2 = /dev/ica1 IBMCA Device 1
2043 ...
2044
2045119 char VMware virtual network control
Alan Cox04c860c2009-04-03 14:50:52 +01002046 0 = /dev/vnet0 1st virtual network
2047 1 = /dev/vnet1 2nd virtual network
Linus Torvalds1da177e2005-04-16 15:20:36 -07002048 ...
2049
2050120-127 char LOCAL/EXPERIMENTAL USE
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08002051
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052120-127 block LOCAL/EXPERIMENTAL USE
2053 Allocated for local/experimental use. For devices not
2054 assigned official numbers, these ranges should be
2055 used in order to avoid conflicting with future assignments.
2056
2057128-135 char Unix98 PTY masters
2058
2059 These devices should not have corresponding device
2060 nodes; instead they should be accessed through the
2061 /dev/ptmx cloning interface.
2062
Linus Torvalds1da177e2005-04-16 15:20:36 -07002063128 block SCSI disk devices (128-143)
2064 0 = /dev/sddy 129th SCSI disk whole disk
2065 16 = /dev/sddz 130th SCSI disk whole disk
2066 32 = /dev/sdea 131th SCSI disk whole disk
2067 ...
2068 240 = /dev/sden 144th SCSI disk whole disk
2069
2070 Partitions are handled in the same way as for IDE
2071 disks (see major number 3) except that the limit on
2072 partitions is 15.
2073
Linus Torvalds1da177e2005-04-16 15:20:36 -07002074129 block SCSI disk devices (144-159)
2075 0 = /dev/sdeo 145th SCSI disk whole disk
2076 16 = /dev/sdep 146th SCSI disk whole disk
2077 32 = /dev/sdeq 147th SCSI disk whole disk
2078 ...
2079 240 = /dev/sdfd 160th SCSI disk whole disk
2080
2081 Partitions are handled in the same way as for IDE
2082 disks (see major number 3) except that the limit on
2083 partitions is 15.
2084
2085130 char (Misc devices)
2086
2087130 block SCSI disk devices (160-175)
2088 0 = /dev/sdfe 161st SCSI disk whole disk
2089 16 = /dev/sdff 162nd SCSI disk whole disk
2090 32 = /dev/sdfg 163rd SCSI disk whole disk
2091 ...
2092 240 = /dev/sdft 176th SCSI disk whole disk
2093
2094 Partitions are handled in the same way as for IDE
2095 disks (see major number 3) except that the limit on
2096 partitions is 15.
2097
2098131 block SCSI disk devices (176-191)
2099 0 = /dev/sdfu 177th SCSI disk whole disk
2100 16 = /dev/sdfv 178th SCSI disk whole disk
2101 32 = /dev/sdfw 179th SCSI disk whole disk
2102 ...
2103 240 = /dev/sdgj 192nd SCSI disk whole disk
2104
2105 Partitions are handled in the same way as for IDE
2106 disks (see major number 3) except that the limit on
2107 partitions is 15.
2108
Linus Torvalds1da177e2005-04-16 15:20:36 -07002109132 block SCSI disk devices (192-207)
2110 0 = /dev/sdgk 193rd SCSI disk whole disk
2111 16 = /dev/sdgl 194th SCSI disk whole disk
2112 32 = /dev/sdgm 195th SCSI disk whole disk
2113 ...
2114 240 = /dev/sdgz 208th SCSI disk whole disk
2115
2116 Partitions are handled in the same way as for IDE
2117 disks (see major number 3) except that the limit on
2118 partitions is 15.
2119
Linus Torvalds1da177e2005-04-16 15:20:36 -07002120133 block SCSI disk devices (208-223)
2121 0 = /dev/sdha 209th SCSI disk whole disk
2122 16 = /dev/sdhb 210th SCSI disk whole disk
2123 32 = /dev/sdhc 211th SCSI disk whole disk
2124 ...
2125 240 = /dev/sdhp 224th SCSI disk whole disk
2126
2127 Partitions are handled in the same way as for IDE
2128 disks (see major number 3) except that the limit on
2129 partitions is 15.
2130
Linus Torvalds1da177e2005-04-16 15:20:36 -07002131134 block SCSI disk devices (224-239)
2132 0 = /dev/sdhq 225th SCSI disk whole disk
2133 16 = /dev/sdhr 226th SCSI disk whole disk
2134 32 = /dev/sdhs 227th SCSI disk whole disk
2135 ...
2136 240 = /dev/sdif 240th SCSI disk whole disk
2137
2138 Partitions are handled in the same way as for IDE
2139 disks (see major number 3) except that the limit on
2140 partitions is 15.
2141
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142135 block SCSI disk devices (240-255)
2143 0 = /dev/sdig 241st SCSI disk whole disk
2144 16 = /dev/sdih 242nd SCSI disk whole disk
2145 32 = /dev/sdih 243rd SCSI disk whole disk
2146 ...
2147 240 = /dev/sdiv 256th SCSI disk whole disk
2148
2149 Partitions are handled in the same way as for IDE
2150 disks (see major number 3) except that the limit on
2151 partitions is 15.
2152
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153136-143 char Unix98 PTY slaves
2154 0 = /dev/pts/0 First Unix98 pseudo-TTY
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002155 1 = /dev/pts/1 Second Unix98 pseudo-TTY
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156 ...
2157
2158 These device nodes are automatically generated with
2159 the proper permissions and modes by mounting the
2160 devpts filesystem onto /dev/pts with the appropriate
2161 mount options (distribution dependent, however, on
2162 *most* distributions the appropriate options are
2163 "mode=0620,gid=<gid of the "tty" group>".)
2164
2165136 block Mylex DAC960 PCI RAID controller; ninth controller
2166 0 = /dev/rd/c8d0 First disk, whole disk
2167 8 = /dev/rd/c8d1 Second disk, whole disk
2168 ...
2169 248 = /dev/rd/c8d31 32nd disk, whole disk
2170
2171 Partitions are handled as for major 48.
2172
2173137 block Mylex DAC960 PCI RAID controller; tenth controller
2174 0 = /dev/rd/c9d0 First disk, whole disk
2175 8 = /dev/rd/c9d1 Second disk, whole disk
2176 ...
2177 248 = /dev/rd/c9d31 32nd disk, whole disk
2178
2179 Partitions are handled as for major 48.
2180
2181138 block Mylex DAC960 PCI RAID controller; eleventh controller
2182 0 = /dev/rd/c10d0 First disk, whole disk
2183 8 = /dev/rd/c10d1 Second disk, whole disk
2184 ...
2185 248 = /dev/rd/c10d31 32nd disk, whole disk
2186
2187 Partitions are handled as for major 48.
2188
2189139 block Mylex DAC960 PCI RAID controller; twelfth controller
2190 0 = /dev/rd/c11d0 First disk, whole disk
2191 8 = /dev/rd/c11d1 Second disk, whole disk
2192 ...
2193 248 = /dev/rd/c11d31 32nd disk, whole disk
2194
2195 Partitions are handled as for major 48.
2196
2197140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2198 0 = /dev/rd/c12d0 First disk, whole disk
2199 8 = /dev/rd/c12d1 Second disk, whole disk
2200 ...
2201 248 = /dev/rd/c12d31 32nd disk, whole disk
2202
2203 Partitions are handled as for major 48.
2204
2205141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2206 0 = /dev/rd/c13d0 First disk, whole disk
2207 8 = /dev/rd/c13d1 Second disk, whole disk
2208 ...
2209 248 = /dev/rd/c13d31 32nd disk, whole disk
2210
2211 Partitions are handled as for major 48.
2212
2213142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2214 0 = /dev/rd/c14d0 First disk, whole disk
2215 8 = /dev/rd/c14d1 Second disk, whole disk
2216 ...
2217 248 = /dev/rd/c14d31 32nd disk, whole disk
2218
2219 Partitions are handled as for major 48.
2220
2221143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2222 0 = /dev/rd/c15d0 First disk, whole disk
2223 8 = /dev/rd/c15d1 Second disk, whole disk
2224 ...
2225 248 = /dev/rd/c15d31 32nd disk, whole disk
2226
2227 Partitions are handled as for major 48.
2228
2229144 char Encapsulated PPP
2230 0 = /dev/pppox0 First PPP over Ethernet
2231 ...
2232 63 = /dev/pppox63 64th PPP over Ethernet
2233
2234 This is primarily used for ADSL.
2235
2236 The SST 5136-DN DeviceNet interface driver has been
2237 relocated to major 183 due to an unfortunate conflict.
2238
2239144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2240 0 = mounted device 256
2241 255 = mounted device 511
2242
2243145 char SAM9407-based soundcard
2244 0 = /dev/sam0_mixer
2245 1 = /dev/sam0_sequencer
2246 2 = /dev/sam0_midi00
2247 3 = /dev/sam0_dsp
2248 4 = /dev/sam0_audio
2249 6 = /dev/sam0_sndstat
2250 18 = /dev/sam0_midi01
2251 34 = /dev/sam0_midi02
2252 50 = /dev/sam0_midi03
2253 64 = /dev/sam1_mixer
2254 ...
2255 128 = /dev/sam2_mixer
2256 ...
2257 192 = /dev/sam3_mixer
2258 ...
2259
2260 Device functions match OSS, but offer a number of
2261 addons, which are sam9407 specific. OSS can be
2262 operated simultaneously, taking care of the codec.
2263
2264145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2265 0 = mounted device 512
2266 255 = mounted device 767
2267
2268146 char SYSTRAM SCRAMNet mirrored-memory network
2269 0 = /dev/scramnet0 First SCRAMNet device
2270 1 = /dev/scramnet1 Second SCRAMNet device
2271 ...
2272
2273146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2274 0 = mounted device 768
2275 255 = mounted device 1023
2276
2277147 char Aureal Semiconductor Vortex Audio device
2278 0 = /dev/aureal0 First Aureal Vortex
2279 1 = /dev/aureal1 Second Aureal Vortex
2280 ...
2281
2282147 block Distributed Replicated Block Device (DRBD)
2283 0 = /dev/drbd0 First DRBD device
2284 1 = /dev/drbd1 Second DRBD device
2285 ...
2286
2287148 char Technology Concepts serial card
2288 0 = /dev/ttyT0 First TCL port
2289 1 = /dev/ttyT1 Second TCL port
2290 ...
2291
2292149 char Technology Concepts serial card - alternate devices
2293 0 = /dev/cut0 Callout device for ttyT0
2294 1 = /dev/cut0 Callout device for ttyT1
2295 ...
2296
2297150 char Real-Time Linux FIFOs
2298 0 = /dev/rtf0 First RTLinux FIFO
2299 1 = /dev/rtf1 Second RTLinux FIFO
2300 ...
2301
2302151 char DPT I2O SmartRaid V controller
2303 0 = /dev/dpti0 First DPT I2O adapter
2304 1 = /dev/dpti1 Second DPT I2O adapter
2305 ...
2306
2307152 char EtherDrive Control Device
2308 0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2309 1 = /dev/etherd/err Monitor errors
2310 2 = /dev/etherd/raw Raw AoE packet monitor
2311
2312152 block EtherDrive Block Devices
2313 0 = /dev/etherd/0 EtherDrive 0
2314 ...
2315 255 = /dev/etherd/255 EtherDrive 255
2316
2317153 char SPI Bus Interface (sometimes referred to as MicroWire)
2318 0 = /dev/spi0 First SPI device on the bus
2319 1 = /dev/spi1 Second SPI device on the bus
2320 ...
2321 15 = /dev/spi15 Sixteenth SPI device on the bus
2322
2323153 block Enhanced Metadisk RAID (EMD) storage units
2324 0 = /dev/emd/0 First unit
2325 1 = /dev/emd/0p1 Partition 1 on First unit
2326 2 = /dev/emd/0p2 Partition 2 on First unit
2327 ...
2328 15 = /dev/emd/0p15 Partition 15 on First unit
2329
2330 16 = /dev/emd/1 Second unit
2331 32 = /dev/emd/2 Third unit
2332 ...
2333 240 = /dev/emd/15 Sixteenth unit
2334
2335 Partitions are handled in the same way as for IDE
2336 disks (see major number 3) except that the limit on
2337 partitions is 15.
2338
2339154 char Specialix RIO serial card
2340 0 = /dev/ttySR0 First RIO port
2341 ...
2342 255 = /dev/ttySR255 256th RIO port
2343
2344155 char Specialix RIO serial card - alternate devices
2345 0 = /dev/cusr0 Callout device for ttySR0
2346 ...
2347 255 = /dev/cusr255 Callout device for ttySR255
2348
2349156 char Specialix RIO serial card
2350 0 = /dev/ttySR256 257th RIO port
2351 ...
2352 255 = /dev/ttySR511 512th RIO port
2353
2354157 char Specialix RIO serial card - alternate devices
2355 0 = /dev/cusr256 Callout device for ttySR256
2356 ...
2357 255 = /dev/cusr511 Callout device for ttySR511
2358
2359158 char Dialogic GammaLink fax driver
2360 0 = /dev/gfax0 GammaLink channel 0
2361 1 = /dev/gfax1 GammaLink channel 1
2362 ...
2363
2364159 char RESERVED
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08002365
Linus Torvalds1da177e2005-04-16 15:20:36 -07002366159 block RESERVED
2367
2368160 char General Purpose Instrument Bus (GPIB)
2369 0 = /dev/gpib0 First GPIB bus
2370 1 = /dev/gpib1 Second GPIB bus
2371 ...
2372
2373160 block Carmel 8-port SATA Disks on First Controller
2374 0 = /dev/carmel/0 SATA disk 0 whole disk
2375 1 = /dev/carmel/0p1 SATA disk 0 partition 1
2376 ...
2377 31 = /dev/carmel/0p31 SATA disk 0 partition 31
2378
2379 32 = /dev/carmel/1 SATA disk 1 whole disk
2380 64 = /dev/carmel/2 SATA disk 2 whole disk
2381 ...
2382 224 = /dev/carmel/7 SATA disk 7 whole disk
2383
2384 Partitions are handled in the same way as for IDE
2385 disks (see major number 3) except that the limit on
2386 partitions is 31.
2387
2388161 char IrCOMM devices (IrDA serial/parallel emulation)
2389 0 = /dev/ircomm0 First IrCOMM device
2390 1 = /dev/ircomm1 Second IrCOMM device
2391 ...
2392 16 = /dev/irlpt0 First IrLPT device
2393 17 = /dev/irlpt1 Second IrLPT device
2394 ...
2395
2396161 block Carmel 8-port SATA Disks on Second Controller
2397 0 = /dev/carmel/8 SATA disk 8 whole disk
2398 1 = /dev/carmel/8p1 SATA disk 8 partition 1
2399 ...
2400 31 = /dev/carmel/8p31 SATA disk 8 partition 31
2401
2402 32 = /dev/carmel/9 SATA disk 9 whole disk
2403 64 = /dev/carmel/10 SATA disk 10 whole disk
2404 ...
2405 224 = /dev/carmel/15 SATA disk 15 whole disk
2406
2407 Partitions are handled in the same way as for IDE
2408 disks (see major number 3) except that the limit on
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08002409 partitions is 31.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002410
2411162 char Raw block device interface
2412 0 = /dev/rawctl Raw I/O control device
2413 1 = /dev/raw/raw1 First raw I/O device
2414 2 = /dev/raw/raw2 Second raw I/O device
2415 ...
Kazuo Moriwakad2582a72012-05-28 12:06:44 +09002416 max minor number of raw device is set by kernel config
2417 MAX_RAW_DEVS or raw module parameter 'max_raw_devs'
Linus Torvalds1da177e2005-04-16 15:20:36 -07002418
Alan Cox04c860c2009-04-03 14:50:52 +01002419163 char
Linus Torvalds1da177e2005-04-16 15:20:36 -07002420
2421164 char Chase Research AT/PCI-Fast serial card
2422 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
2423 ...
2424 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
2425 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
2426 ...
2427 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
2428 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
2429 ...
2430 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
2431 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
2432 ...
2433 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
2434
2435165 char Chase Research AT/PCI-Fast serial card - alternate devices
2436 0 = /dev/cuch0 Callout device for ttyCH0
2437 ...
2438 63 = /dev/cuch63 Callout device for ttyCH63
2439
2440166 char ACM USB modems
2441 0 = /dev/ttyACM0 First ACM modem
2442 1 = /dev/ttyACM1 Second ACM modem
2443 ...
2444
2445167 char ACM USB modems - alternate devices
2446 0 = /dev/cuacm0 Callout device for ttyACM0
2447 1 = /dev/cuacm1 Callout device for ttyACM1
2448 ...
2449
2450168 char Eracom CSA7000 PCI encryption adaptor
2451 0 = /dev/ecsa0 First CSA7000
2452 1 = /dev/ecsa1 Second CSA7000
2453 ...
2454
2455169 char Eracom CSA8000 PCI encryption adaptor
2456 0 = /dev/ecsa8-0 First CSA8000
2457 1 = /dev/ecsa8-1 Second CSA8000
2458 ...
2459
2460170 char AMI MegaRAC remote access controller
2461 0 = /dev/megarac0 First MegaRAC card
2462 1 = /dev/megarac1 Second MegaRAC card
2463 ...
2464
2465171 char Reserved for IEEE 1394 (Firewire)
2466
Linus Torvalds1da177e2005-04-16 15:20:36 -07002467172 char Moxa Intellio serial card
2468 0 = /dev/ttyMX0 First Moxa port
2469 1 = /dev/ttyMX1 Second Moxa port
2470 ...
2471 127 = /dev/ttyMX127 128th Moxa port
2472 128 = /dev/moxactl Moxa control port
2473
2474173 char Moxa Intellio serial card - alternate devices
2475 0 = /dev/cumx0 Callout device for ttyMX0
2476 1 = /dev/cumx1 Callout device for ttyMX1
2477 ...
2478 127 = /dev/cumx127 Callout device for ttyMX127
2479
2480174 char SmartIO serial card
2481 0 = /dev/ttySI0 First SmartIO port
2482 1 = /dev/ttySI1 Second SmartIO port
2483 ...
2484
2485175 char SmartIO serial card - alternate devices
2486 0 = /dev/cusi0 Callout device for ttySI0
2487 1 = /dev/cusi1 Callout device for ttySI1
2488 ...
2489
2490176 char nCipher nFast PCI crypto accelerator
2491 0 = /dev/nfastpci0 First nFast PCI device
2492 1 = /dev/nfastpci1 First nFast PCI device
2493 ...
2494
2495177 char TI PCILynx memory spaces
2496 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
2497 ...
2498 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2499 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
2500 ...
2501 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2502 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
2503 ...
2504 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2505
2506178 char Giganet cLAN1xxx virtual interface adapter
2507 0 = /dev/clanvi0 First cLAN adapter
2508 1 = /dev/clanvi1 Second cLAN adapter
2509 ...
2510
Alan Cox04c860c2009-04-03 14:50:52 +01002511179 block MMC block devices
2512 0 = /dev/mmcblk0 First SD/MMC card
2513 1 = /dev/mmcblk0p1 First partition on first MMC card
2514 8 = /dev/mmcblk1 Second SD/MMC card
2515 ...
2516
Olof Johansson5e71b7a2010-09-17 21:19:57 -04002517 The start of next SD/MMC card can be configured with
2518 CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe
2519 time using the mmcblk.perdev_minors option. That would
2520 bump the offset between each card to be the configured
2521 value instead of the default 8.
2522
Linus Torvalds1da177e2005-04-16 15:20:36 -07002523179 char CCube DVXChip-based PCI products
2524 0 = /dev/dvxirq0 First DVX device
2525 1 = /dev/dvxirq1 Second DVX device
2526 ...
2527
2528180 char USB devices
2529 0 = /dev/usb/lp0 First USB printer
2530 ...
2531 15 = /dev/usb/lp15 16th USB printer
Linus Torvalds1da177e2005-04-16 15:20:36 -07002532 48 = /dev/usb/scanner0 First USB scanner
2533 ...
2534 63 = /dev/usb/scanner15 16th USB scanner
2535 64 = /dev/usb/rio500 Diamond Rio 500
2536 65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
2537 66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
Jan Engelhardt11420212006-06-23 02:05:34 -07002538 96 = /dev/usb/hiddev0 1st USB HID device
2539 ...
2540 111 = /dev/usb/hiddev15 16th USB HID device
Alan Cox04c860c2009-04-03 14:50:52 +01002541 112 = /dev/usb/auer0 1st auerswald ISDN device
2542 ...
2543 127 = /dev/usb/auer15 16th auerswald ISDN device
Jan Engelhardt11420212006-06-23 02:05:34 -07002544 128 = /dev/usb/brlvgr0 First Braille Voyager device
2545 ...
2546 131 = /dev/usb/brlvgr3 Fourth Braille Voyager device
2547 132 = /dev/usb/idmouse ID Mouse (fingerprint scanner) device
2548 133 = /dev/usb/sisusbvga1 First SiSUSB VGA device
2549 ...
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08002550 140 = /dev/usb/sisusbvga8 Eighth SISUSB VGA device
Jan Engelhardt11420212006-06-23 02:05:34 -07002551 144 = /dev/usb/lcd USB LCD device
2552 160 = /dev/usb/legousbtower0 1st USB Legotower device
2553 ...
2554 175 = /dev/usb/legousbtower15 16th USB Legotower device
Greg Kroah-Hartman5b775f62008-08-26 16:22:06 -07002555 176 = /dev/usb/usbtmc1 First USB TMC device
2556 ...
Greg Kroah-Hartman1b62d252010-09-30 05:01:22 -07002557 191 = /dev/usb/usbtmc16 16th USB TMC device
2558 192 = /dev/usb/yurex1 First USB Yurex device
2559 ...
2560 209 = /dev/usb/yurex16 16th USB Yurex device
Linus Torvalds1da177e2005-04-16 15:20:36 -07002561
2562180 block USB block devices
Pete Zaitcev953a7f22006-07-30 03:04:01 -07002563 0 = /dev/uba First USB block device
2564 8 = /dev/ubb Second USB block device
2565 16 = /dev/ubc Third USB block device
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08002566 ...
Linus Torvalds1da177e2005-04-16 15:20:36 -07002567
2568181 char Conrad Electronic parallel port radio clocks
2569 0 = /dev/pcfclock0 First Conrad radio clock
2570 1 = /dev/pcfclock1 Second Conrad radio clock
2571 ...
2572
2573182 char Picture Elements THR2 binarizer
2574 0 = /dev/pethr0 First THR2 board
2575 1 = /dev/pethr1 Second THR2 board
2576 ...
2577
2578183 char SST 5136-DN DeviceNet interface
2579 0 = /dev/ss5136dn0 First DeviceNet interface
2580 1 = /dev/ss5136dn1 Second DeviceNet interface
2581 ...
2582
2583 This device used to be assigned to major number 144.
2584 It had to be moved due to an unfortunate conflict.
2585
2586184 char Picture Elements' video simulator/sender
2587 0 = /dev/pevss0 First sender board
2588 1 = /dev/pevss1 Second sender board
2589 ...
2590
2591185 char InterMezzo high availability file system
2592 0 = /dev/intermezzo0 First cache manager
2593 1 = /dev/intermezzo1 Second cache manager
2594 ...
2595
Justin P. Mattock0ea6e612010-07-23 20:51:24 -07002596 See http://web.archive.org/web/20080115195241/
2597 http://inter-mezzo.org/index.html
Linus Torvalds1da177e2005-04-16 15:20:36 -07002598
2599186 char Object-based storage control device
2600 0 = /dev/obd0 First obd control device
2601 1 = /dev/obd1 Second obd control device
2602 ...
2603
2604 See ftp://ftp.lustre.org/pub/obd for code and information.
2605
2606187 char DESkey hardware encryption device
2607 0 = /dev/deskey0 First DES key
2608 1 = /dev/deskey1 Second DES key
2609 ...
2610
2611188 char USB serial converters
2612 0 = /dev/ttyUSB0 First USB serial converter
2613 1 = /dev/ttyUSB1 Second USB serial converter
2614 ...
2615
2616189 char USB serial converters - alternate devices
2617 0 = /dev/cuusb0 Callout device for ttyUSB0
2618 1 = /dev/cuusb1 Callout device for ttyUSB1
2619 ...
2620
2621190 char Kansas City tracker/tuner card
2622 0 = /dev/kctt0 First KCT/T card
2623 1 = /dev/kctt1 Second KCT/T card
2624 ...
2625
2626191 char Reserved for PCMCIA
2627
2628192 char Kernel profiling interface
2629 0 = /dev/profile Profiling control device
2630 1 = /dev/profile0 Profiling device for CPU 0
2631 2 = /dev/profile1 Profiling device for CPU 1
2632 ...
2633
2634193 char Kernel event-tracing interface
2635 0 = /dev/trace Tracing control device
2636 1 = /dev/trace0 Tracing device for CPU 0
2637 2 = /dev/trace1 Tracing device for CPU 1
2638 ...
2639
2640194 char linVideoStreams (LINVS)
2641 0 = /dev/mvideo/status0 Video compression status
2642 1 = /dev/mvideo/stream0 Video stream
2643 2 = /dev/mvideo/frame0 Single compressed frame
2644 3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2645 4 = /dev/mvideo/codec0 Direct codec access
2646 5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2647
2648 16 = /dev/mvideo/status1 Second device
2649 ...
2650 32 = /dev/mvideo/status2 Third device
2651 ...
2652 ...
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08002653 240 = /dev/mvideo/status15 16th device
Linus Torvalds1da177e2005-04-16 15:20:36 -07002654 ...
2655
2656195 char Nvidia graphics devices
2657 0 = /dev/nvidia0 First Nvidia card
2658 1 = /dev/nvidia1 Second Nvidia card
2659 ...
2660 255 = /dev/nvidiactl Nvidia card control device
2661
2662196 char Tormenta T1 card
2663 0 = /dev/tor/0 Master control channel for all cards
2664 1 = /dev/tor/1 First DS0
2665 2 = /dev/tor/2 Second DS0
2666 ...
2667 48 = /dev/tor/48 48th DS0
2668 49 = /dev/tor/49 First pseudo-channel
2669 50 = /dev/tor/50 Second pseudo-channel
2670 ...
2671
2672197 char OpenTNF tracing facility
2673 0 = /dev/tnf/t0 Trace 0 data extraction
2674 1 = /dev/tnf/t1 Trace 1 data extraction
2675 ...
2676 128 = /dev/tnf/status Tracing facility status
2677 130 = /dev/tnf/trace Tracing device
2678
2679198 char Total Impact TPMP2 quad coprocessor PCI card
2680 0 = /dev/tpmp2/0 First card
2681 1 = /dev/tpmp2/1 Second card
2682 ...
2683
2684199 char Veritas volume manager (VxVM) volumes
2685 0 = /dev/vx/rdsk/*/* First volume
2686 1 = /dev/vx/rdsk/*/* Second volume
2687 ...
2688
2689199 block Veritas volume manager (VxVM) volumes
2690 0 = /dev/vx/dsk/*/* First volume
2691 1 = /dev/vx/dsk/*/* Second volume
2692 ...
2693
2694 The namespace in these directories is maintained by
2695 the user space VxVM software.
2696
2697200 char Veritas VxVM configuration interface
2698 0 = /dev/vx/config Configuration access node
2699 1 = /dev/vx/trace Volume i/o trace access node
2700 2 = /dev/vx/iod Volume i/o daemon access node
2701 3 = /dev/vx/info Volume information access node
2702 4 = /dev/vx/task Volume tasks access node
2703 5 = /dev/vx/taskmon Volume tasks monitor daemon
2704
2705201 char Veritas VxVM dynamic multipathing driver
2706 0 = /dev/vx/rdmp/* First multipath device
2707 1 = /dev/vx/rdmp/* Second multipath device
2708 ...
2709201 block Veritas VxVM dynamic multipathing driver
2710 0 = /dev/vx/dmp/* First multipath device
2711 1 = /dev/vx/dmp/* Second multipath device
2712 ...
2713
2714 The namespace in these directories is maintained by
2715 the user space VxVM software.
2716
2717202 char CPU model-specific registers
2718 0 = /dev/cpu/0/msr MSRs on CPU 0
2719 1 = /dev/cpu/1/msr MSRs on CPU 1
2720 ...
2721
Jan Engelhardt11420212006-06-23 02:05:34 -07002722202 block Xen Virtual Block Device
2723 0 = /dev/xvda First Xen VBD whole disk
2724 16 = /dev/xvdb Second Xen VBD whole disk
2725 32 = /dev/xvdc Third Xen VBD whole disk
2726 ...
2727 240 = /dev/xvdp Sixteenth Xen VBD whole disk
2728
2729 Partitions are handled in the same way as for IDE
2730 disks (see major number 3) except that the limit on
2731 partitions is 15.
2732
Linus Torvalds1da177e2005-04-16 15:20:36 -07002733203 char CPU CPUID information
2734 0 = /dev/cpu/0/cpuid CPUID on CPU 0
2735 1 = /dev/cpu/1/cpuid CPUID on CPU 1
2736 ...
2737
2738204 char Low-density serial ports
2739 0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2740 1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2741 2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2742 3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2743 4 = /dev/ttyFB0 Intel Footbridge (ARM)
2744 5 = /dev/ttySA0 StrongARM builtin serial port 0
2745 6 = /dev/ttySA1 StrongARM builtin serial port 1
2746 7 = /dev/ttySA2 StrongARM builtin serial port 2
2747 8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2748 9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2749 10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2750 11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2751 12 = /dev/ttyFW0 Firmware console - port 0
2752 13 = /dev/ttyFW1 Firmware console - port 1
2753 14 = /dev/ttyFW2 Firmware console - port 2
2754 15 = /dev/ttyFW3 Firmware console - port 3
2755 16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2756 ...
2757 31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2758 32 = /dev/ttyDB0 DataBooster serial port 0
2759 ...
2760 39 = /dev/ttyDB7 DataBooster serial port 7
2761 40 = /dev/ttySG0 SGI Altix console port
2762 41 = /dev/ttySMX0 Motorola i.MX - port 0
2763 42 = /dev/ttySMX1 Motorola i.MX - port 1
2764 43 = /dev/ttySMX2 Motorola i.MX - port 2
2765 44 = /dev/ttyMM0 Marvell MPSC - port 0
2766 45 = /dev/ttyMM1 Marvell MPSC - port 1
2767 46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
2768 ...
2769 47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
Jan Engelhardt11420212006-06-23 02:05:34 -07002770 50 = /dev/ttyIOC0 Altix serial card
Linus Torvalds1da177e2005-04-16 15:20:36 -07002771 ...
Jan Engelhardt11420212006-06-23 02:05:34 -07002772 81 = /dev/ttyIOC31 Altix serial card
2773 82 = /dev/ttyVR0 NEC VR4100 series SIU
2774 83 = /dev/ttyVR1 NEC VR4100 series DSIU
2775 84 = /dev/ttyIOC84 Altix ioc4 serial card
2776 ...
2777 115 = /dev/ttyIOC115 Altix ioc4 serial card
2778 116 = /dev/ttySIOC0 Altix ioc3 serial card
2779 ...
2780 147 = /dev/ttySIOC31 Altix ioc3 serial card
2781 148 = /dev/ttyPSC0 PPC PSC - port 0
2782 ...
2783 153 = /dev/ttyPSC5 PPC PSC - port 5
2784 154 = /dev/ttyAT0 ATMEL serial port 0
2785 ...
2786 169 = /dev/ttyAT15 ATMEL serial port 15
2787 170 = /dev/ttyNX0 Hilscher netX serial port 0
2788 ...
2789 185 = /dev/ttyNX15 Hilscher netX serial port 15
Jan Engelhardta4521942006-06-25 05:49:33 -07002790 186 = /dev/ttyJ0 JTAG1 DCC protocol based serial port emulation
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08002791 187 = /dev/ttyUL0 Xilinx uartlite - port 0
2792 ...
2793 190 = /dev/ttyUL3 Xilinx uartlite - port 3
2794 191 = /dev/xvc0 Xen virtual console - port 0
Alan Cox04c860c2009-04-03 14:50:52 +01002795 192 = /dev/ttyPZ0 pmac_zilog - port 0
2796 ...
2797 195 = /dev/ttyPZ3 pmac_zilog - port 3
2798 196 = /dev/ttyTX0 TX39/49 serial port 0
2799 ...
2800 204 = /dev/ttyTX7 TX39/49 serial port 7
2801 205 = /dev/ttySC0 SC26xx serial port 0
2802 206 = /dev/ttySC1 SC26xx serial port 1
2803 207 = /dev/ttySC2 SC26xx serial port 2
2804 208 = /dev/ttySC3 SC26xx serial port 3
Alan Cox05b36302009-04-07 16:48:35 +01002805 209 = /dev/ttyMAX0 MAX3100 serial port 0
2806 210 = /dev/ttyMAX1 MAX3100 serial port 1
2807 211 = /dev/ttyMAX2 MAX3100 serial port 2
2808 212 = /dev/ttyMAX3 MAX3100 serial port 3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002809
2810205 char Low-density serial ports (alternate device)
2811 0 = /dev/culu0 Callout device for ttyLU0
2812 1 = /dev/culu1 Callout device for ttyLU1
2813 2 = /dev/culu2 Callout device for ttyLU2
2814 3 = /dev/culu3 Callout device for ttyLU3
2815 4 = /dev/cufb0 Callout device for ttyFB0
2816 5 = /dev/cusa0 Callout device for ttySA0
2817 6 = /dev/cusa1 Callout device for ttySA1
2818 7 = /dev/cusa2 Callout device for ttySA2
2819 8 = /dev/cusc0 Callout device for ttySC0
2820 9 = /dev/cusc1 Callout device for ttySC1
2821 10 = /dev/cusc2 Callout device for ttySC2
2822 11 = /dev/cusc3 Callout device for ttySC3
2823 12 = /dev/cufw0 Callout device for ttyFW0
2824 13 = /dev/cufw1 Callout device for ttyFW1
2825 14 = /dev/cufw2 Callout device for ttyFW2
2826 15 = /dev/cufw3 Callout device for ttyFW3
2827 16 = /dev/cuam0 Callout device for ttyAM0
2828 ...
2829 31 = /dev/cuam15 Callout device for ttyAM15
2830 32 = /dev/cudb0 Callout device for ttyDB0
2831 ...
2832 39 = /dev/cudb7 Callout device for ttyDB7
2833 40 = /dev/cusg0 Callout device for ttySG0
2834 41 = /dev/ttycusmx0 Callout device for ttySMX0
2835 42 = /dev/ttycusmx1 Callout device for ttySMX1
2836 43 = /dev/ttycusmx2 Callout device for ttySMX2
2837 46 = /dev/cucpm0 Callout device for ttyCPM0
2838 ...
2839 49 = /dev/cucpm5 Callout device for ttyCPM5
2840 50 = /dev/cuioc40 Callout device for ttyIOC40
2841 ...
2842 81 = /dev/cuioc431 Callout device for ttyIOC431
Jan Engelhardt11420212006-06-23 02:05:34 -07002843 82 = /dev/cuvr0 Callout device for ttyVR0
2844 83 = /dev/cuvr1 Callout device for ttyVR1
Linus Torvalds1da177e2005-04-16 15:20:36 -07002845
Linus Torvalds1da177e2005-04-16 15:20:36 -07002846206 char OnStream SC-x0 tape devices
2847 0 = /dev/osst0 First OnStream SCSI tape, mode 0
2848 1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2849 ...
2850 32 = /dev/osst0l First OnStream SCSI tape, mode 1
2851 33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2852 ...
2853 64 = /dev/osst0m First OnStream SCSI tape, mode 2
2854 65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2855 ...
2856 96 = /dev/osst0a First OnStream SCSI tape, mode 3
2857 97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2858 ...
2859 128 = /dev/nosst0 No rewind version of /dev/osst0
2860 129 = /dev/nosst1 No rewind version of /dev/osst1
2861 ...
2862 160 = /dev/nosst0l No rewind version of /dev/osst0l
2863 161 = /dev/nosst1l No rewind version of /dev/osst1l
2864 ...
2865 192 = /dev/nosst0m No rewind version of /dev/osst0m
2866 193 = /dev/nosst1m No rewind version of /dev/osst1m
2867 ...
2868 224 = /dev/nosst0a No rewind version of /dev/osst0a
2869 225 = /dev/nosst1a No rewind version of /dev/osst1a
2870 ...
2871
2872 The OnStream SC-x0 SCSI tapes do not support the
2873 standard SCSI SASD command set and therefore need
2874 their own driver "osst". Note that the IDE, USB (and
2875 maybe ParPort) versions may be driven via ide-scsi or
2876 usb-storage SCSI emulation and this osst device and
2877 driver as well. The ADR-x0 drives are QIC-157
2878 compliant and don't need osst.
2879
2880207 char Compaq ProLiant health feature indicate
2881 0 = /dev/cpqhealth/cpqw Redirector interface
2882 1 = /dev/cpqhealth/crom EISA CROM
2883 2 = /dev/cpqhealth/cdt Data Table
2884 3 = /dev/cpqhealth/cevt Event Log
2885 4 = /dev/cpqhealth/casr Automatic Server Recovery
2886 5 = /dev/cpqhealth/cecc ECC Memory
2887 6 = /dev/cpqhealth/cmca Machine Check Architecture
2888 7 = /dev/cpqhealth/ccsm Deprecated CDT
2889 8 = /dev/cpqhealth/cnmi NMI Handling
2890 9 = /dev/cpqhealth/css Sideshow Management
2891 10 = /dev/cpqhealth/cram CMOS interface
2892 11 = /dev/cpqhealth/cpci PCI IRQ interface
2893
2894208 char User space serial ports
2895 0 = /dev/ttyU0 First user space serial port
2896 1 = /dev/ttyU1 Second user space serial port
2897 ...
2898
2899209 char User space serial ports (alternate devices)
2900 0 = /dev/cuu0 Callout device for ttyU0
2901 1 = /dev/cuu1 Callout device for ttyU1
2902 ...
2903
2904210 char SBE, Inc. sync/async serial card
2905 0 = /dev/sbei/wxcfg0 Configuration device for board 0
2906 1 = /dev/sbei/dld0 Download device for board 0
2907 2 = /dev/sbei/wan00 WAN device, port 0, board 0
2908 3 = /dev/sbei/wan01 WAN device, port 1, board 0
2909 4 = /dev/sbei/wan02 WAN device, port 2, board 0
2910 5 = /dev/sbei/wan03 WAN device, port 3, board 0
2911 6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2912 7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2913 8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2914 9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2915 10 = /dev/sbei/wxcfg1 Configuration device for board 1
2916 11 = /dev/sbei/dld1 Download device for board 1
2917 12 = /dev/sbei/wan10 WAN device, port 0, board 1
2918 13 = /dev/sbei/wan11 WAN device, port 1, board 1
2919 14 = /dev/sbei/wan12 WAN device, port 2, board 1
2920 15 = /dev/sbei/wan13 WAN device, port 3, board 1
2921 16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2922 17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2923 18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2924 19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2925 ...
2926
2927 Yes, each board is really spaced 10 (decimal) apart.
2928
2929211 char Addinum CPCI1500 digital I/O card
2930 0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2931 1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2932 ...
2933
2934212 char LinuxTV.org DVB driver subsystem
Linus Torvalds1da177e2005-04-16 15:20:36 -07002935 0 = /dev/dvb/adapter0/video0 first video decoder of first card
2936 1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2937 2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2938 3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2939 4 = /dev/dvb/adapter0/demux0 first demux device of first card
2940 5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2941 6 = /dev/dvb/adapter0/ca0 first common access port of first card
2942 7 = /dev/dvb/adapter0/net0 first network device of first card
2943 8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2944 9 = /dev/dvb/adapter0/video1 second video decoder of first card
2945 ...
2946 64 = /dev/dvb/adapter1/video0 first video decoder of second card
2947 ...
2948 128 = /dev/dvb/adapter2/video0 first video decoder of third card
2949 ...
2950 196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2951
Marcel Holtmannc611d2c2005-11-17 09:46:39 -08002952216 char Bluetooth RFCOMM TTY devices
2953 0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
2954 1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
Linus Torvalds1da177e2005-04-16 15:20:36 -07002955 ...
2956
Marcel Holtmannc611d2c2005-11-17 09:46:39 -08002957217 char Bluetooth RFCOMM TTY devices (alternate devices)
2958 0 = /dev/curf0 Callout device for rfcomm0
2959 1 = /dev/curf1 Callout device for rfcomm1
Linus Torvalds1da177e2005-04-16 15:20:36 -07002960 ...
2961
2962218 char The Logical Company bus Unibus/Qbus adapters
2963 0 = /dev/logicalco/bci/0 First bus adapter
2964 1 = /dev/logicalco/bci/1 First bus adapter
2965 ...
2966
2967219 char The Logical Company DCI-1300 digital I/O card
2968 0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2969 1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2970 ...
2971
2972220 char Myricom Myrinet "GM" board
2973 0 = /dev/myricom/gm0 First Myrinet GM board
2974 1 = /dev/myricom/gmp0 First board "root access"
2975 2 = /dev/myricom/gm1 Second Myrinet GM board
2976 3 = /dev/myricom/gmp1 Second board "root access"
2977 ...
2978
2979221 char VME bus
2980 0 = /dev/bus/vme/m0 First master image
2981 1 = /dev/bus/vme/m1 Second master image
2982 2 = /dev/bus/vme/m2 Third master image
2983 3 = /dev/bus/vme/m3 Fourth master image
2984 4 = /dev/bus/vme/s0 First slave image
2985 5 = /dev/bus/vme/s1 Second slave image
2986 6 = /dev/bus/vme/s2 Third slave image
2987 7 = /dev/bus/vme/s3 Fourth slave image
2988 8 = /dev/bus/vme/ctl Control
2989
2990 It is expected that all VME bus drivers will use the
2991 same interface. For interface documentation see
2992 http://www.vmelinux.org/.
2993
2994224 char A2232 serial card
2995 0 = /dev/ttyY0 First A2232 port
2996 1 = /dev/ttyY1 Second A2232 port
2997 ...
2998
2999225 char A2232 serial card (alternate devices)
3000 0 = /dev/cuy0 Callout device for ttyY0
3001 1 = /dev/cuy1 Callout device for ttyY1
3002 ...
3003
3004226 char Direct Rendering Infrastructure (DRI)
3005 0 = /dev/dri/card0 First graphics card
3006 1 = /dev/dri/card1 Second graphics card
3007 ...
3008
3009227 char IBM 3270 terminal Unix tty access
3010 1 = /dev/3270/tty1 First 3270 terminal
3011 2 = /dev/3270/tty2 Seconds 3270 terminal
3012 ...
3013
3014228 char IBM 3270 terminal block-mode access
3015 0 = /dev/3270/tub Controlling interface
3016 1 = /dev/3270/tub1 First 3270 terminal
3017 2 = /dev/3270/tub2 Second 3270 terminal
3018 ...
3019
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08003020229 char IBM iSeries/pSeries virtual console
3021 0 = /dev/hvc0 First console port
3022 1 = /dev/hvc1 Second console port
Linus Torvalds1da177e2005-04-16 15:20:36 -07003023 ...
3024
3025230 char IBM iSeries virtual tape
3026 0 = /dev/iseries/vt0 First virtual tape, mode 0
3027 1 = /dev/iseries/vt1 Second virtual tape, mode 0
3028 ...
3029 32 = /dev/iseries/vt0l First virtual tape, mode 1
3030 33 = /dev/iseries/vt1l Second virtual tape, mode 1
3031 ...
3032 64 = /dev/iseries/vt0m First virtual tape, mode 2
3033 65 = /dev/iseries/vt1m Second virtual tape, mode 2
3034 ...
3035 96 = /dev/iseries/vt0a First virtual tape, mode 3
3036 97 = /dev/iseries/vt1a Second virtual tape, mode 3
3037 ...
3038 128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
3039 129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
3040 ...
3041 160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
3042 161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
3043 ...
3044 192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
3045 193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
3046 ...
3047 224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
3048 225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
3049 ...
3050
3051 "No rewind" refers to the omission of the default
3052 automatic rewind on device close. The MTREW or MTOFFL
3053 ioctl()'s can be used to rewind the tape regardless of
3054 the device used to access it.
3055
Jan Engelhardt11420212006-06-23 02:05:34 -07003056231 char InfiniBand
Linus Torvalds1da177e2005-04-16 15:20:36 -07003057 0 = /dev/infiniband/umad0
3058 1 = /dev/infiniband/umad1
Jan Engelhardt11420212006-06-23 02:05:34 -07003059 ...
3060 63 = /dev/infiniband/umad63 63rd InfiniBandMad device
3061 64 = /dev/infiniband/issm0 First InfiniBand IsSM device
3062 65 = /dev/infiniband/issm1 Second InfiniBand IsSM device
3063 ...
3064 127 = /dev/infiniband/issm63 63rd InfiniBand IsSM device
3065 128 = /dev/infiniband/uverbs0 First InfiniBand verbs device
3066 129 = /dev/infiniband/uverbs1 Second InfiniBand verbs device
3067 ...
3068 159 = /dev/infiniband/uverbs31 31st InfiniBand verbs device
Linus Torvalds1da177e2005-04-16 15:20:36 -07003069
Jan Engelhardt11420212006-06-23 02:05:34 -07003070232 char Biometric Devices
3071 0 = /dev/biometric/sensor0/fingerprint first fingerprint sensor on first device
3072 1 = /dev/biometric/sensor0/iris first iris sensor on first device
3073 2 = /dev/biometric/sensor0/retina first retina sensor on first device
3074 3 = /dev/biometric/sensor0/voiceprint first voiceprint sensor on first device
3075 4 = /dev/biometric/sensor0/facial first facial sensor on first device
3076 5 = /dev/biometric/sensor0/hand first hand sensor on first device
3077 ...
3078 10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device
3079 ...
3080 20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device
3081 ...
3082
3083233 char PathScale InfiniPath interconnect
3084 0 = /dev/ipath Primary device for programs (any unit)
3085 1 = /dev/ipath0 Access specifically to unit 0
3086 2 = /dev/ipath1 Access specifically to unit 1
3087 ...
3088 4 = /dev/ipath3 Access specifically to unit 3
3089 129 = /dev/ipath_sma Device used by Subnet Management Agent
3090 130 = /dev/ipath_diag Device used by diagnostics programs
3091
3092234-239 UNASSIGNED
Linus Torvalds1da177e2005-04-16 15:20:36 -07003093
3094240-254 char LOCAL/EXPERIMENTAL USE
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08003095
Linus Torvalds1da177e2005-04-16 15:20:36 -07003096240-254 block LOCAL/EXPERIMENTAL USE
3097 Allocated for local/experimental use. For devices not
3098 assigned official numbers, these ranges should be
3099 used in order to avoid conflicting with future assignments.
3100
3101255 char RESERVED
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08003102
Linus Torvalds1da177e2005-04-16 15:20:36 -07003103255 block RESERVED
3104
3105 This major is reserved to assist the expansion to a
3106 larger number space. No device nodes with this major
3107 should ever be created on the filesystem.
Matt LaPlante992caac2006-10-03 22:52:05 +02003108 (This is probably not true anymore, but I'll leave it
Jan Engelhardt11420212006-06-23 02:05:34 -07003109 for now /Torben)
3110
3111---LARGE MAJORS!!!!!---
3112
3113256 char Equinox SST multi-port serial boards
3114 0 = /dev/ttyEQ0 First serial port on first Equinox SST board
3115 127 = /dev/ttyEQ127 Last serial port on first Equinox SST board
3116 128 = /dev/ttyEQ128 First serial port on second Equinox SST board
3117 ...
3118 1027 = /dev/ttyEQ1027 Last serial port on eighth Equinox SST board
3119
3120256 block Resident Flash Disk Flash Translation Layer
3121 0 = /dev/rfda First RFD FTL layer
3122 16 = /dev/rfdb Second RFD FTL layer
3123 ...
3124 240 = /dev/rfdp 16th RFD FTL layer
3125
Jan Engelhardta4521942006-06-25 05:49:33 -07003126257 char Phoenix Technologies Cryptographic Services Driver
3127 0 = /dev/ptlsec Crypto Services Driver
3128
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08003129257 block SSFDC Flash Translation Layer filesystem
3130 0 = /dev/ssfdca First SSFDC layer
3131 8 = /dev/ssfdcb Second SSFDC layer
3132 16 = /dev/ssfdcc Third SSFDC layer
3133 24 = /dev/ssfdcd 4th SSFDC layer
3134 32 = /dev/ssfdce 5th SSFDC layer
3135 40 = /dev/ssfdcf 6th SSFDC layer
3136 48 = /dev/ssfdcg 7th SSFDC layer
3137 56 = /dev/ssfdch 8th SSFDC layer
Jan Engelhardta4521942006-06-25 05:49:33 -07003138
Torben Mathiasen30aaa5c2006-12-06 20:40:20 -08003139258 block ROM/Flash read-only translation layer
3140 0 = /dev/blockrom0 First ROM card's translation layer interface
3141 1 = /dev/blockrom1 Second ROM card's translation layer interface
3142 ...
Linus Torvalds1da177e2005-04-16 15:20:36 -07003143
Alan Cox04c860c2009-04-03 14:50:52 +01003144259 block Block Extended Major
3145 Used dynamically to hold additional partition minor
3146 numbers and allow large numbers of partitions per device
3147
3148259 char FPGA configuration interfaces
3149 0 = /dev/icap0 First Xilinx internal configuration
3150 1 = /dev/icap1 Second Xilinx internal configuration
3151
Boaz Harrosh71969fd2009-01-25 16:50:02 +02003152260 char OSD (Object-based-device) SCSI Device
3153 0 = /dev/osd0 First OSD Device
3154 1 = /dev/osd1 Second OSD Device
3155 ...
3156 255 = /dev/osd255 256th OSD Device
3157
Linus Torvalds1da177e2005-04-16 15:20:36 -07003158 **** ADDITIONAL /dev DIRECTORY ENTRIES
3159
3160This section details additional entries that should or may exist in
3161the /dev directory. It is preferred that symbolic links use the same
3162form (absolute or relative) as is indicated here. Links are
3163classified as "hard" or "symbolic" depending on the preferred type of
3164link; if possible, the indicated type of link should be used.
3165
3166
3167 Compulsory links
3168
3169These links should exist on all systems:
3170
3171/dev/fd /proc/self/fd symbolic File descriptors
3172/dev/stdin fd/0 symbolic stdin file descriptor
3173/dev/stdout fd/1 symbolic stdout file descriptor
3174/dev/stderr fd/2 symbolic stderr file descriptor
3175/dev/nfsd socksys symbolic Required by iBCS-2
3176/dev/X0R null symbolic Required by iBCS-2
3177
3178Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3179
3180 Recommended links
3181
3182It is recommended that these links exist on all systems:
3183
3184/dev/core /proc/kcore symbolic Backward compatibility
3185/dev/ramdisk ram0 symbolic Backward compatibility
3186/dev/ftape qft0 symbolic Backward compatibility
3187/dev/bttv0 video0 symbolic Backward compatibility
3188/dev/radio radio0 symbolic Backward compatibility
3189/dev/i2o* /dev/i2o/* symbolic Backward compatibility
3190/dev/scd? sr? hard Alternate SCSI CD-ROM name
3191
3192 Locally defined links
3193
3194The following links may be established locally to conform to the
3195configuration of the system. This is merely a tabulation of existing
3196practice, and does not constitute a recommendation. However, if they
3197exist, they should have the following uses.
3198
3199/dev/mouse mouse port symbolic Current mouse device
3200/dev/tape tape device symbolic Current tape device
3201/dev/cdrom CD-ROM device symbolic Current CD-ROM device
3202/dev/cdwriter CD-writer symbolic Current CD-writer device
3203/dev/scanner scanner symbolic Current scanner device
3204/dev/modem modem port symbolic Current dialout device
3205/dev/root root device symbolic Current root filesystem
3206/dev/swap swap device symbolic Current swap device
3207
3208/dev/modem should not be used for a modem which supports dialin as
3209well as dialout, as it tends to cause lock file problems. If it
3210exists, /dev/modem should point to the appropriate primary TTY device
3211(the use of the alternate callout devices is deprecated).
3212
3213For SCSI devices, /dev/tape and /dev/cdrom should point to the
3214``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3215/dev/cdwriter and /dev/scanner should point to the appropriate generic
3216SCSI devices (/dev/sg*).
3217
3218/dev/mouse may point to a primary serial TTY device, a hardware mouse
3219device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3220
3221 Sockets and pipes
3222
3223Non-transient sockets and named pipes may exist in /dev. Common entries are:
3224
3225/dev/printer socket lpd local socket
3226/dev/log socket syslog local socket
3227/dev/gpmdata socket gpm mouse multiplexer
3228
3229 Mount points
3230
3231The following names are reserved for mounting special filesystems
3232under /dev. These special filesystems provide kernel interfaces that
3233cannot be provided with standard device nodes.
3234
3235/dev/pts devpts PTY slave filesystem
3236/dev/shm tmpfs POSIX shared memory maintenance access
3237
3238 **** TERMINAL DEVICES
3239
3240Terminal, or TTY devices are a special class of character devices. A
3241terminal device is any device that could act as a controlling terminal
3242for a session; this includes virtual consoles, serial ports, and
3243pseudoterminals (PTYs).
3244
3245All terminal devices share a common set of capabilities known as line
Matt LaPlantefff92892006-10-03 22:47:42 +02003246disciplines; these include the common terminal line discipline as well
Linus Torvalds1da177e2005-04-16 15:20:36 -07003247as SLIP and PPP modes.
3248
3249All terminal devices are named similarly; this section explains the
3250naming and use of the various types of TTYs. Note that the naming
3251conventions include several historical warts; some of these are
3252Linux-specific, some were inherited from other systems, and some
3253reflect Linux outgrowing a borrowed convention.
3254
3255A hash mark (#) in a device name is used here to indicate a decimal
3256number without leading zeroes.
3257
3258 Virtual consoles and the console device
3259
3260Virtual consoles are full-screen terminal displays on the system video
3261monitor. Virtual consoles are named /dev/tty#, with numbering
3262starting at /dev/tty1; /dev/tty0 is the current virtual console.
3263/dev/tty0 is the device that should be used to access the system video
3264card on those architectures for which the frame buffer devices
3265(/dev/fb*) are not applicable. Do not use /dev/console
3266for this purpose.
3267
3268The console device, /dev/console, is the device to which system
3269messages should be sent, and on which logins should be permitted in
3270single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3271by the kernel; for previous versions it should be a symbolic link to
3272either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3273a serial port primary (tty*, not cu*) device, depending on the
3274configuration of the system.
3275
3276 Serial ports
3277
3278Serial ports are RS-232 serial ports and any device which simulates
3279one, either in hardware (such as internal modems) or in software (such
3280as the ISDN driver.) Under Linux, each serial ports has two device
3281names, the primary or callin device and the alternate or callout one.
3282Each kind of device is indicated by a different letter. For any
3283letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3284respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3285correspond to /dev/cua# and /dev/cub#. In the future, it should be
3286expected that multiple letters will be used; all letters will be upper
3287case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3288"cu" device (e.g. /dev/cudp#).
3289
3290The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3291
3292The alternate devices provide for kernel-based exclusion and somewhat
3293different defaults than the primary devices. Their main purpose is to
3294allow the use of serial ports with programs with no inherent or broken
3295support for serial ports. Their use is deprecated, and they may be
3296removed from a future version of Linux.
3297
3298Arbitration of serial ports is provided by the use of lock files with
3299the names /var/lock/LCK..ttyX#. The contents of the lock file should
3300be the PID of the locking process as an ASCII number.
3301
3302It is common practice to install links such as /dev/modem
3303which point to serial ports. In order to ensure proper locking in the
3304presence of these links, it is recommended that software chase
3305symlinks and lock all possible names; additionally, it is recommended
3306that a lock file be installed with the corresponding alternate
3307device. In order to avoid deadlocks, it is recommended that the locks
3308are acquired in the following order, and released in the reverse:
3309
3310 1. The symbolic link name, if any (/var/lock/LCK..modem)
3311 2. The "tty" name (/var/lock/LCK..ttyS2)
3312 3. The alternate device name (/var/lock/LCK..cua2)
3313
3314In the case of nested symbolic links, the lock files should be
3315installed in the order the symlinks are resolved.
3316
3317Under no circumstances should an application hold a lock while waiting
3318for another to be released. In addition, applications which attempt
3319to create lock files for the corresponding alternate device names
3320should take into account the possibility of being used on a non-serial
3321port TTY, for which no alternate device would exist.
3322
3323 Pseudoterminals (PTYs)
3324
3325Pseudoterminals, or PTYs, are used to create login sessions or provide
Matt LaPlantefff92892006-10-03 22:47:42 +02003326other capabilities requiring a TTY line discipline (including SLIP or
Linus Torvalds1da177e2005-04-16 15:20:36 -07003327PPP capability) to arbitrary data-generation processes. Each PTY has
3328a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3329/dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3330allowing each master side to be opened only once.
3331
3332Once the master side has been opened, the corresponding slave device
3333can be used in the same manner as any TTY device. The master and
3334slave devices are connected by the kernel, generating the equivalent
3335of a bidirectional pipe with TTY capabilities.
3336
3337Recent versions of the Linux kernels and GNU libc contain support for
3338the System V/Unix98 naming scheme for PTYs, which assigns a common
3339device, /dev/ptmx, to all the masters (opening it will automatically
3340give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3341for the slaves; the slaves are named with decimal integers (/dev/pts/#
3342in our notation). This removes the problem of exhausting the
3343namespace and enables the kernel to automatically create the device
3344nodes for the slaves on demand using the "devpts" filesystem.
3345