Clean checkin of the 6.03 code
BUG: 32495852
Change-Id: I5038a3bb41e217380c1188463daec07b1e9b6b48
diff --git a/NEWS b/NEWS
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+Starting with 1.47, changes marked with SYSLINUX, PXELINUX, ISOLINUX
+or EXTLINUX apply to that specific program only; other changes apply
+to all derivatives.
+
+Changes in 6.03:
+ * chain: Fix chainloading on 6.02 (Raphael S. Carvalho).
+ * core: Do not leak the __lowmem and __bss16 macros to modules;
+ hide them so modules will not use them.
+ * load_linux: Do not use size heuristic for non-relocatable
+ kernels, for zImage kernels and for non-Linux kernels.
+ * PXELINUX: Fix the SENDCOOKIES feature for HTTP
+ (Russel Santillanes).
+ * gnu-efi: Add gnu-efi as a submodule.
+ * ANSI: Support color tables with more than 256 entries
+ (James Buren).
+ * EFI: Fix displayed version; add DATE (Gene Cumm)
+ * PXELINUX, EFI: Fix bad read of file size over TFTP on EFI64
+ (Sylvain Gault).
+ * Fix hand over to kernel:
+ "Booting kernel failed: Invalid argument" error.
+ * ISOLINUX: EDX, LBA values higher than 65535; work around for
+ buggy BIOS, where the system would hang, would reboot, or
+ would show a "Disk error 01, AX=42" message.
+ * core/legacynet: Enable dot quad resolution (Gene Cumm).
+ * diag/geodsp improvements (Gene Cumm).
+ * DOS: Fix syslinux.com DOS-based installer.
+ * Improve gcc 4.3.0 compatibility.
+ * syslxint: fix compilation on non-x86 architectures.
+ * localboot: Fix "localboot 0x80" and similar cases.
+ * Add memset() calls prior to any intcall() and other mem fixes;
+ specially relevant for older hardware and/or buggy BIOS.
+ * poweroff.c32: Fixes (Gene Cumm).
+ * HDT: Fix memory leak in CLI (Felipe Pena).
+ * ACPI: Remove memset of buffer; it makes things clearer but
+ also prevents some compilation warnings (Erwan Velu).
+ * Add manpages for isohybrid, memdiskfind
+ (Peter Jones, Gene Cumm).
+ * ISOLINUX: Experimental Rock Ridge support (Thomas Schmitt).
+ * comapi: Remove the comapi interfaces.
+ * EFI: Fixes on PE files and OVMF compatibility
+ (Sylvain Gault, Gene Cumm).
+ * EFI: Updates and fixes for gnu-efi sub-module
+ (Sylvain Gault, Gene Cumm).
+ * BIOS: Fix low memory check.
+ * Filesystem UUID to SYSAPPEND bit 0x40000 for FAT and ext2
+ (Serj Kalichev).
+ * Makefiles: Export the firmware type as a cpp variable.
+ Additional improvements. Fix "make spotless".
+ * core, BIOS: Move __syslinux_shuffler_size to assembly.
+ Actually get the shuffler size sanely. Fix booting recent
+ Syslinux versions on certain hardware and on certain
+ virtualization software (e.g. QEMU 0.11.1, VirtualBox 4.1.x).
+ * lua: Upgrade to v.5.2.3 (Ferenc Wágner) and additional fixes.
+ * chainload: Fixes to chain.c32 and pxechn.c32.
+ * NTFS: Make byte_shift a constant.
+ * NTFS: Correct parsing of file runs (Andy Alex).
+ * core, BIOS: Correct detection of EDD (Andy Alex).
+ * core: Avoid initializing the cache more than once
+ (Raphael S. Carvalho).
+ * NTFS: Handle fragmented $MFT file (Andy Alex).
+ * BIOS: Use int 0x16, ah=0x02 to probe for shift flags. Attempt
+ workaround for USB keyboards not responding at boot time.
+ * kbd: Getting the keyboard shift state is now a firmware method.
+ * kbd: Fix force-prompt features.
+ * BTRFS: Fix booting on BTRFS.
+ * cache, btrfs: Provide a general cached read routine.
+ * NTFS: Correct file->offset usage in ntfs_readdir (Andy Alex).
+ * New support for UFS/FFS (UFS1/2) (Raphael S. Carvalho).
+ * adv: Remove double definition;
+ it should fix uses of the ADV, including "--once".
+ * memdump: Remove old obsolete COM16 binary.
+ * isohybrid: Numerous fixes (Thomas Schmitt).
+ * chain.c32: Add an adjustable "strict={0,1,2}" flag, improve
+ error reporting (Michal Soltys.)
+ * lpxelinux.0: Workaround for various buggy BIOSes (Gene
+ Cumm.)
+ * PXE: Fix a stack-smashing bug which broke a large number of
+ systems.
+
+Changes in 6.02:
+ * efi64: Add support for booting 32-bit kernels.
+ * efi: Use the EFI handover protocol when booting kernels if
+ available.
+ * Fix various make targets that became broken when switching to
+ per-firmware object directories, including 'make install' and
+ 'make netinstall'.
+ * efi: Improve handling of packet loss in UDP stack.
+ * tests: Introduce a new regression test framework designed to
+ ensure bugs are not reintroduced once fixed.
+ * efi: Implement localboot support.
+
+Changes in 6.01:
+ * efi: Mark some symbols as __export otherwise libcom32.c32 and
+ vesamenu.c32 will refuse to load.
+ * bios: Wire up the bios kernel loader. It was impossible to
+ load a kernel from bios in 6.00.
+ * efi: Fix 'make installer'. There are no EFI installers so
+ don't try and build them as we run into build errors.
+ * efi: Reuse the initial TFTP client port in subsequent
+ transfers otherwise the server will send an error packet.
+ * efi: Some firmware will not set a default TTL value in IP
+ packets - we must explicitly set it ourselves otherwise a
+ value of zero may be used.
+ * bios, font: Fix a font regression affecting some VirtualBox
+ users.
+
+Changes in 6.00:
+ * Add support for booting from EFI.
+ * EFI TCP/IP support. This allows the EFI backend to hook into
+ the generic TFTP, HTTP and FTP functionality.
+
+Changes in 5.11:
+ * Dynamic debug support: Add new module, debug.c32, that allows
+ debug code to be dynamically enabled and disabled at runtime.
+
+Changes in 5.10:
+ * PXELINUX: An entirely new network implementation based on
+ the lwIP embedded TCP/IP stack. As a result, plain PXELINUX
+ can now support HTTP and FTP without gPXE/iPXE. ls/readdir
+ functionality is supported over HTTP with an indexing
+ webserver, or over FTP with most common FTP servers. For the
+ new network stack use lpxelinux.0. For the legacy stack use
+ pxelinux.0.
+ * Rename the "ipappend" option to "sysappend" ("ipappend" is
+ still accepted as an alias) and make it available for all
+ derivatives. Add additional strings derived from the system
+ DMI/SMBIOS information if available.
+ * "sysappend" strings are also sent as http cookies, with the
+ prefix _Syslinux_ added, on all http transfers. This can be
+ overridden with the SENDCOOKIES configuration file command.
+ * poweroff.c32: A new module to power off a system via APM. It
+ replaces the poweroff COMBOOT module (Sebastian Herbszt).
+ * PXELINUX: Fix booting with DHCP options 209 and 210 which was
+ broken in 5.00.
+ * Handle loading kernel images with no protected mode code. A
+ legitimate kernel image can consist solely of real-mode code.
+ The support for booting such images was broken in 5.00 (Josh Triplett).
+ * Fix a regression in the .psf font file loader introduced
+ in 5.00.
+
+Changes in 5.01:
+ * txt/: A new AsciiDoc documentation set (work-in-progress)
+ (Gene Cumm).
+ * core: Fix a bug in the realloc() implementation that caused
+ machines to appear to run out of free memory.
+ * ldlinux: Fix multiple buffer overflows in cmdline parsing
+ code that resulted in files failing to run and cmdlines
+ being truncated.
+ * core: Fix debug build by tagging __bad_SEG() with __export.
+ * com32: Restrict library filenames to 8.3 format.
+ * EXTLINUX: Fix installation and subdirectory patching.
+ * ISOLINUX: Fix booting isohybrid images that are over 32K.
+ * com32: Strip modules to reduce their size.
+ * XFS: Implement directory block cache and fix
+ shortform-directory lookup (Paulo Alcantara).
+
+Changes in 5.00:
+ * com32: Switched from the COM32 object format to ELF as it is
+ a much more powerful format that allows undefined symbols to
+ be resolved at runtime and dynamic loading of module
+ dependencies, which means modules now become shared object
+ files instead of statically linked binaries - reducing both
+ disk space and runtime memory consumption.
+ * core: Split non-core functionality into ldlinux.c32, which
+ is an ELF module loaded by the core that contains everything
+ the core doesn't require to boot the system, e.g. config
+ parser, command-line interface, etc.
+ * Replaced __intcall() calls with direct function calls now
+ that we can resolve undefined symbols at runtime, thanks to
+ the ELF object support. Now that we no longer need to go
+ through the 16-bit interrupt mechanism we can make full use
+ of the 32-bit execution environment. This change required
+ reimplementing lots of the 16-bit assembly code from core/
+ in C.
+ * com32: __com32.cs_bounce is gone now we always run in a
+ 32-bit environment once we execute ldlinux.c32.
+ * ldlinux: A new "PATH" directive was added to the ldlinux.c32
+ config parser that specifies a colon-separated list of
+ directories to search when attempting to load modules.
+ * ALL: Delete all references to/code for 16-bit COMBOOT files.
+ COMBOOT files (.cbt and .com) are no longer supported under
+ Syslinux.
+
+Changes in 4.07:
+ * EXTLINUX: fix crash caused by dereferencing garbage pointer.
+ * Plug memory leak in searchdir which eventually leads to an
+ observable hang (Shao Miller).
+ * ISOLINUX: fix bug triggered by isohybrid images larger than
+ 32K which results in an invalid image checksum error.
+ * menugen: make it Py3k compatible (Paulo Alcantara).
+
+Changes in 4.06:
+ * Support for NTFS, by Paulo Alcantara.
+ * EXTLINUX: more robust device detection, allow user to override.
+ * kontron_wdt.c32: Add a new module to enable the hardware
+ watchdog of some Kontron boards. It allows enabling the watchdog
+ and then booting a given image.
+ * HDT updated, and now can display images regarding some detection
+ steps. Add postexec command to run a particular entry after
+ HDT's execution, add silent option and various fixes.
+ * ifcpu.c32: Detect hypervisor presence.
+ * lua.c32: Add dhcp support and support for native Syslinux
+ functions syslinux_config(), syslinux_ipappend_strings() and
+ syslinux_reboot().
+ * isohybrid: Workaround for various EFI systems.
+ * pxechn.c32, a PXE NBP chainloader. More versatile alternative
+ to pxechain.com and resolves the PXELINUX -> WDS issue with
+ Microsoft Windows Server 2008R2 (Gene Cumm).
+ * btrfs: Fix booting off of a subvolume.
+ * com32: Add device tree support.
+ * SYSLINUX: Fix relative paths for VFAT. The CONFIG and APPEND
+ directives now support entirely relative paths.
+
+Changes in 4.05:
+ * HDT updated, and now supports uploading data to a TFTP
+ server.
+ * ISOLINUX: remove the .img file support; it has been broken
+ on virtually all systems since the beginning, and has been
+ totally broken since 4.00 at least. Use MEMDISK instead.
+ * chain.c32: Support chaining ReactOS' FreeLdr (Shao Miller)
+ * isohybrid: -m option to add support for Mac EFI booting.
+ * ifmemdsk.c32: Choose boot option based on presence of
+ MEMDISK.
+ * Remove bogus distributed mk-lba-img binary.
+ * The Syslinux project has a new, cool logo by Abi
+ "ixxvil" Rasheed (doc/logo/*).
+
+Changes in 4.04:
+ * PXELINUX: Fix handling of unqualified DNS names.
+ * PXELINUX: Fix timer bug when PXELINUX might be unloaded
+ (Gene Cumm).
+ * core/writedec.inc: Fix duplicate declaration and overflow
+ (Gene Cumm).
+ * GCC 4.5 fixes.
+ * sample directory: Fix Makefile include (Gene Cumm).
+ * ver.com: New universal DOS/COMBOOT application to display
+ version information (includes DRMK) (Gene Cumm).
+ * rosh.c32: updated; Using getopt() for internal commands to aid
+ parsing options; Fix bugs in ls; add warm reboot and echo
+ (Gene Cumm).
+ * com32: fix a file descriptor leak.
+ * gfxboot.c32: handle TEXT..ENDTEXT; error out on no LABELs
+ found (Sebastian Herbszt).
+ * Fix booting on non-partitioned devices.
+ * MBR, isohybrid: Workaround for a BIOS issue on Acer
+ Travelmate and possibly other machines.
+ * COM32: Adding ACPI parsing libary
+ * HDT: Release 0.4.1 to support ACPI parsing,
+ improved mutli-core/cpu reporting
+ * LUA: Updating to 5.1.4-2
+ * SYSLINUX: core/diskstart.inc: Reset DS after checksum in case
+ it isn't 0 (Gene Cumm).
+ * win64: Script update for additional mingw compiler names
+ (Gene Cumm).
+ * diag: New directory for diagnostic-related tools. Add a
+ handoff MBR/VBR and geometry display images (Gene Cumm).
+ * MEMDISK: use "mem=" parameter to mark available memory above
+ this point as reserved (core already does alignment) (Gene Cumm).
+ * MEMDISK: Additional disk probe checks and debug output
+ (Shao Miller, Gene Cumm).
+ * gpxe: add gpxelinuxk.0, based off of undionly.kpxe + new
+ script (Gene Cumm).
+ * isohybrid: install the isohdpfx*.bin/isohdppx*.bin files to
+ make isohybrid images in one step with GNU xorriso.
+ * PXELINUX: disable a hack that would make localboot work on
+ some machines, but break just about as many. Some machines
+ which worked with "localboot 0" in previous versions may
+ need "localboot -1" in this one. If you have a machine
+ which requires "localboot -1", a copy of the dmidecode
+ or sysdump output would be appreciated.
+ * Include a set of diagnostics by Gene Cumm.
+ * Fixes for gcc 4.6 and binutils 2.21.51.
+ * chain.c32: Allow "uuid" as a synonym to "guid".
+ * Handle directory names starting with .. for vfat and
+ iso9660.
+ * New MENU HIDDENKEY command to provide a one-keystroke way to
+ activate a boot option from a hidden menu intro screen.
+
+Changes in 4.03:
+ * Don't hang if no configuration file is found.
+ * Better support for booting from MBRs which don't pass
+ handover information.
+ * EXTLINUX: Try to be smarter about finding the partition
+ offset.
+ * chain.c32: support chainloading Dell Real Mode Kernel (Gene
+ Cumm).
+ * chain.c32: fix booting in CHS mode.
+ * rosh.c32 updated (Gene Cumm).
+ * Fix the -s option to the syslinux/extlinux installer (Arwin
+ Vosselman).
+ * isohybrid: fix padding of large images (PJ Pandit).
+
+Changes in 4.02:
+ * SYSLINUX: correctly handle the case where the -d option is
+ specified with a non-absolute path, i.e. "syslinux -d
+ syslinux" instead of "syslinux -d /syslinux".
+ * ISOLINUX: recognize the directory names /boot/syslinux and
+ /syslinux, and the filename syslinux.cfg in addition to the
+ isolinux-specific names. Thus, "syslinux.cfg" is now a
+ generic name, whereas "isolinux.cfg" or "extlinux.conf" is
+ specific to different derivative.
+ * chain.c32: support setting alternate config filename for
+ stage2 of GRUB Legacy (Gert Hulselmans).
+ * whichsys.c32: execute specific command, based on Syslinux
+ bootloader variant (Gert Hulselmans).
+ * lua.c32: a lot of new bindings added to the "syslinux"
+ namespace: VESA, PCI, DMI, kernel loading (Marcel Ritter).
+ * btrfs: print a comprehensive error message if compressed or
+ encrypted files are encountered (neither is currently
+ supported.)
+ * SYSLINUX: mtools installer: honor TMPDIR, error out on disk
+ full.
+ * Handle fallbacks from EDD to CHS, to deal with systems which
+ announce EDD support but don't actually have it.
+ * SYSLINUX: the mtools, DOS and win32 installers now use the new
+ command line options.
+ * PXELINUX: fix the use of IP addresses in TFTP :: or tftp://
+ host syntax.
+ * SYSLINUX: experimental Win64 installer (syslinux64.exe).
+
+Changes in 4.01:
+ * ISOLINUX: fix initialization on systems which don't zero
+ low memory.
+ * SYSLINUX/EXTLINUX: fix handing of disk read retries in
+ EDD mode.
+ * ISOLINUX: change the initialization sequence to avoid
+ problems with certain (old) BIOSes. Special thanks to
+ Helmut Hullen for invaluable debugging support.
+ * ifplop.c32: new module which detects if the PLoP Boot Loader
+ already has booted a CDROM or USB drive (Gert Hulselmans).
+ * Correct a severe memory overwrite bug, triggered primarily
+ when selecting a very long command line in the menu system.
+ * lua.c32: Lua script interpreter, currently experimental
+ (Alexey Zaytsev, Marcel Ritter, Geert Stappers).
+ * PXELINUX: new option IPAPPEND 4 to append the system UUID to
+ the kernel command line.
+ * PXELINUX: display BOOTIF and SYSUUID at startup time, and
+ when Ctrl-N is pressed on the command line.
+
+Changes in 4.00:
+ * Major code base changes; all filesystem rewritten in C.
+ This work was done primarily by Liu Aleaxander (Yuanhan Liu).
+ * EXTLINUX: btrfs and ext4 support. btrfs support was done by
+ Alek Du of Intel.
+ * EXTLINUX is no longer a separate derivative; extlinux and
+ syslinux both install the same loader (ldlinux.sys); for the
+ Linux-based installers the extlinux binary is used for a
+ mounted filesystem; the syslinux binary for an unmounted
+ filesystem.
+ * When loading a new configuration file with the CONFIG
+ command, one can now also specify a new current directory
+ with an APPEND statement.
+ * Full ADV support for Syslinux, to boot-once and MENU SAVE
+ works.
+ * Full support of GPT-partitioned disks, including disks
+ and/or parititions larger than 2 TiB (if supported by BIOS.)
+ * The GPT handover protocol adjusted to the current T13
+ committee draft; see doc/gpt.txt.
+ * HDT: code cleanup, small bugfixes
+ * The "linux" syslinux installer (syslinux-nomtools) now has a
+ command-line syntax closer to the extlinux installer. The
+ mtools, dos and win32 installers will get this new syntax
+ eventually, but it is not implemented yet.
+ * chain.c32: support booting GPT partitions by index, GUID, label.
+ * chain.c32: support booting the Syslinux partition with "fs".
+ * chain.c32: implement gpt.txt hand-over protocol.
+ * chain.c32: support for chainloading Grub stage 2.
+ * PXELINUX: TFTP URL syntax (tftp://) supported even when not
+ running gPXE/gpxelinux.
+ * New ls.c32 module to display the contents of the disk from
+ the command line, and pwd.c32 to display the current
+ directory.
+ * rosh.c32 (read only shell) updated and hopefully usable.
+ * PXELINUX: Support "localboot -1", just like the other
+ derivatives.
+ * gfxboot.com removed in favor of gfxboot.c32.
+ * New MENU HELP statement to display fullscreen help text as a
+ result of a menu selection.
+ * memdiskfind utility that can be used with the phram driver
+ in the Linux kernel to mount a memdisk.
+ * ifcpu.c32: Adding usage when no parameters are given,
+ adding PAE support.
+ * ifcpu.c32, ifcpu64.c32: handle more than one argument per
+ target.
+ * isohybrid: C version which does not require Perl.
+ * New command MENU IMMEDIATE to permit hotkeys to activate
+ immediately without needing Enter.
+ * mdiskchk.com supports a --no-sequential (or -n) option to
+ suppress the classic all-drive-probing heuristic. Useful
+ on BIOSes who crash/hang when certain drive numbers are
+ probed.
+ * ElTorito.Sys DOS driver now scans drive numbers upwards
+ instead of downwards, in order to avoid a fairly common
+ bug on some BIOSes where probing drive 0xFF causes a
+ failure.
+ * NASM 2.03 or later required to build. 2.07 or later
+ recommended.
+
+Changes in 3.86:
+ * chain.c32: fix chainloading the MBR of a hard disk (broken
+ in 3.85).
+ * mboot.c32: report the boot loader name in the information
+ structure.
+ * com32: set argv[0] in a com32 module.
+ * core: add a workaround for a bug in Xen HVM older than
+ version 3.3: disable halt on those platforms.
+ * Fix problems where certain operations in com32 modules would
+ cause the core to believe the system was idle.
+ * MEMDISK: fix MBR detection when used with a DOSEMU header or
+ an offset.
+ * MEMDISK: generate the mBFT checksum correctly.
+
+Changes in 3.85:
+ * gPXELINUX: updated to gPXE 1.0.0. gPXELINUX can now do NBP
+ chainloading, and does not require a second DHCP.
+ * vesamenu.c32: unbreak the default "grey hole" background.
+ * We no longer have a built-in default of "linux auto".
+ Instead, if no DEFAULT or UI statement is found, or the
+ configuration file is missing entirely, we drop to the boot:
+ prompt with an error message (if NOESCAPE is set, we stop
+ with a "boot failed" message; this is also the case for
+ PXELINUX if the configuration file is not found.)
+ * chain.c32: support chainloading Grub4DOS; patch by Gert
+ Hulselmans.
+ * New tool: sysdump.c32, can be used to produce system
+ information for debugging via tftp or ymodem (serial port).
+ * "vga=current" on the Linux command line is now supported.
+ * chain.c32: support for Windows Recovery Console, via the
+ "cmldr=" option.
+ * chain.c32: should now support loading NTLDR from different
+ type media than loaded from.
+ * chain.c32: support chainloading to a FAT/NTFS partition with
+ invalid "hidden sectors" via the "sethidden" option.
+ * memdisk: fix the mBFT ACPI table.
+ * vesamenu.c32: if the image is smaller than the screen, tile
+ it across the whole screen.
+ * mkdiskimage: -s option for producing a sparse image.
+ * vesamenu.c32: support arbitrary resolution setting (beyond
+ BIOS support) on some Intel-based video chipsets. This code
+ is a modified version of the "915resolution" tool by
+ Steve Tomljenovic; your mileage might vary.
+
+Changes in 3.84:
+ * SYSLINUX: make the DOS installer work for MS-DOS 7.x/8.x
+ (Win9x/ME) again.
+ * HDT: updated to version 0.3.6 (numerous changes.)
+ * mboot.c32: now supports video mode setting if requested by
+ the image.
+ * MEMDISK: Fix floppy images of PC-DOS.
+ * MEMDISK: Add support for emulation of CD-ROM images; patch
+ by Shao Miller.
+ * MEMDISK: Comply with the Win9x "safe hook" standard,
+ allowing a protected-mode driver.
+ * MEMDISK: New "mBFT" ACPI table, by analogy with the iSCSI
+ iBFT table. This allows detection from a protected-mode
+ operating system without EDD support.
+ * 32-bit version of the gfxboot loader (gfxboot.c32), so far
+ experimental. This will replace gfxboot.com in the future.
+ * vesamenu.c32: new MENU RESOLUTION directive to set a screen
+ resolution other than 640x480.
+ * chain.c32: add support for loading isolinux.bin.
+ * chain.c32: make sure to always return to text mode.
+ * eltorito.sys: DOS driver for generic CD-ROMs; by Gary Tong
+ and Bart Lagerweij.
+
+Changes in 3.83:
+ * PXELINUX: clear memory before handing over to a chainloaded
+ NBP. This may help avoid a bug in Windows RIS.
+ * PXELINUX: fix localboot after NBP chainloading on certain
+ BIOSes (including ASUS A8N-E, but possibly others.)
+ * chain.c32: support chainloaded bootloaders on ISOLINUX.
+ * PXELINUX: allow filenames up to 251 characters.
+ * MEMDISK: fix problems booting from USB on Thinkpads, and
+ possibly other machines or hardware combinations.
+ * isohybrid: fix the -id option.
+ * HDT: updated to version 0.3.4.
+ * MEMDISK: the stack size is now configurable, with the stack=
+ option.
+ * Simple menu: fix Ctrl-W (word erase) in command-line edit.
+ * Simple menu: fix crash on some platforms.
+ * Gfxboot: fixes to the configuration file parsing.
+ * PXELINUX: add a tool to override specific DHCP options via
+ values hardcoded in the pxelinux.0 file. These hardcoded
+ values can be either "before DHCP" (defaults if DHCP do not
+ provide values), or "after DHCP" (overrides DHCP). The tool
+ pxelinux-options can be used to set these options. This
+ feature does not apply to gpxelinux.0; when used with gPXE
+ this is better handled by modifying the embedded script.
+
+Changes in 3.82:
+ * isohybrid: fix the -partok logic for loading from a partition.
+ * ISOLINUX: deal with systems which return from INT 13h with
+ interrupts disabled.
+ * Do not invoke the idle handler during large file loads.
+ * Simple menu: make ONTIMEOUT work with MENU HIDDEN.
+ * PXELINUX: handle TFTP servers which have extra NULs at the
+ end of an OACK packet.
+
+Changes in 3.81:
+ * Shuffler: fix bug in real-mode entry. This affected a
+ number of modules, probably in relatively unimportant ways,
+ but it completely broke linux.c32.
+ * Improved performance.
+ * Attempt to halt the processor while idle. This can cause
+ bad reponsiveness when using a serial console especially for
+ automated input; if that ends up being a problem, use the
+ new "NOHALT 1" configuration command.
+ * linux.c32 now suppresses all messages if the "quiet" flag is
+ specified.
+ * isohybrid: add a variety of options, and a help message.
+ * ISOLINUX: fix booting in hybrid mode when CBIOS is used.
+ This unfortunately means that the isohybrid handoff protocol
+ has changed, so the isohybrid utility must version-match
+ isolinux.bin.
+ * Drop support for ACPI 3 extended memory flags.
+ * Menu system: don't set the autocr flag on the serial
+ console.
+ * altmbr: fix handling of logical partitions.
+ * altmbr: cap at 439 bytes so the partition select byte isn't
+ part of the file.
+
+Changes in 3.80:
+ * New shuffler mechanism and API.
+ * Rewritten mboot.c32 module.
+ * The syslinux_boot_linux() function has been simplified.
+ * Don't hang trying to boot a "menu quit" label from the CLI.
+ * Fix problem with boot-once "sticking" on some BIOSes.
+ * isohybrid: fix problem with images over 2 GB in size.
+ * APM poweroff module (poweroff.com) by Sebastian Herbszt.
+ * ISOLINUX: fix the handling of large directories. Bug found
+ and fixed by Steffen Winterfeldt.
+
+Changes in 3.75:
+ * PXELINUX: fix the "keeppxe" option, which was broken in
+ 3.74.
+ * MEMDISK: correct the extraction of geometry information from
+ the MBR of a hard disk image, again broken in 3.74.
+ * extlinux(1) man page from Brian Pellin.
+ * Simple menu: MENU SAVE is now controllable on a menu-by-menu
+ or entry-by-entry basis.
+ * gPXELINUX: fix interrupt-disabling bug.
+ * HDT: fix lockup on machines with certain PCI configurations.
+
+Changes in 3.74:
+ * New UI directive, which allows a more natural way to specify
+ a menu system (or not.) With the UI directive specifying
+ the menu system, the DEFAULT directive can be used to select
+ the default entry inside the menus.
+ * kbdmap.c32: new module to load a new keyboard map
+ dynamically.
+ * isohybrid: workaround bug in some versions of binutils.
+ * Fix issue with the placement of the initrd on some machines.
+ * ifcpu64: fix handling of less than three arguments.
+ * Fix bug in the shuffle library when dealing with a very
+ large number of fragments.
+ * Documentation fixes by Vicente Jimenez Aguilar.
+ * gPXE updated to version 0.9.7.
+ * hdt.c32: Hardware Detection Tool, an interactive hardware
+ analyzer module by Erwan Velu.
+ * MEMDISK: enable automatic determination of the disk geometry
+ for a large floppy disk image if (and only if) it is
+ formatted with a FAT filesystem.
+ * SYSLINUX: fix the handling of .bss files on FAT12/16.
+ * Suppress the Loading ... message if "quiet" is specified on
+ the kernel command line.
+ * Fix the use of "CONSOLE 0" with menu.c32.
+ * Allow COM32 modules to be aware of all memory even in the
+ presence of a memory hole. The "linux.c32" module can be
+ used to load a kernel (or memdisk) plus large initrd on
+ such a system.
+ * MBR: produce alternate MBR variants which force the drive
+ number to hd0 (_f variants), or force the drive number to
+ hd0 if the Ctrl key is pressed (_c variants.) Furthermore,
+ add an MBR variant (altmbr*.bin) which ignores the active
+ flag and instead boots the partition number specified in the
+ byte at offset 439 decimal.
+ * Add IPAPPEND strings to com32 modules, especially needed for
+ linux.c32.
+ * New MENU SAVE directive which saves the latest menu
+ selection until the next boot. Currently only implemented for
+ EXTLINUX.
+ * gfxboot.com: *experimental* interface module to Steffen
+ Winterfeldt's "gfxboot" graphical front end
+ (http://gfxboot.sourceforge.net/). Module by Sebastian Herbszt.
+
+Changes in 3.73:
+ * Upgrade gPXE to release version 0.9.5.
+ * Fix a number of build errors on various platforms.
+ * Handle systems with E820 "extended attributes" per ACPI 3.
+ Someone "cleverly" decided to change the E820 spec in a
+ backwards-incompatible manner!
+ * MEMDISK: default to "safeint".
+ * Adopt the moniker "The Syslinux Project", standard proper
+ noun capitalization, to refer to the project as a whole.
+ Thus, reserve the all-caps "SYSLINUX" to refer to the FAT
+ loader.
+ * mboot.c32: add "-solaris" option to pass DHCP information to
+ the Solaris kernel; required for automatic Solaris boot
+ without using Solaris' pxeboot program.
+ * config.c32: trivial COM32 module to restart Syslinux with
+ another configuration file from the command line (equivalent
+ to the CONFIG command in the configuratin file.)
+
+Changes in 3.72:
+ * Include the pxechain.com module from Jeffery Hutzelman at
+ Carnegie Mellon University. This allows chaining another
+ PXE boot program while changing the DHCP packet passed to
+ it.
+ * Reorganize the Makefile system.
+ * Major PCI core cleanups and other source cleanup.
+ * gPXE code updated.
+ * Try to avoid memory-snooping attacks on passwords. Note
+ that if someone has root on the box, they generally don't
+ need to compromise the boot loader...
+ * ISOLINUX: fix crash when given a zero-length file.
+ * sdi.c32: support gzipped SDI images.
+ * ISOLINUX: support generating images which can be either
+ a CD-ROM or a hard disk (USB disk, etc.) See
+ doc/isolinux.txt for more information.
+ * Remote gdb support for COM32 modules; patch from Stefan
+ Hajnoczi.
+ * Support beeps in F-key help in the simple menu system.
+ * Tab display of labels, based on a patch from Sebastian
+ Herbszt. Can be disabled with the NOCOMPLETE configuration
+ command.
+ * "menu default" can now be specified after "menu begin", to
+ indicate that a specific submenu should be the default entry.
+
+Changes in 3.71:
+ * Workaround for a VESA BIOS which tries to make DOS system
+ calls(!!)
+ * Simple menu: fix navigation around disabled entries
+ (or at least try to...)
+ * EXTLINUX: proper error message when confused about mount
+ point.
+ * MEMDISK: be smarter about incompletely disabled floppies in
+ the BIOS and about being the only floppy.
+ * Optionally allow initrd to be specified on a separate line
+ rather than as part of the "append" line. This is not
+ recommended, but apparently makes life easier for some
+ tools.
+ * SYSLINUX: if no config file is present, set the current
+ directory to the root directory (Sebastian Herbszt).
+ * chain.c32: option "hide" to support hiding and unhiding of
+ primary partitions on the boot drive with DOS, Win, or OS/2
+ partition types (01, 04, 06, 07, 0b, 0c, 0e).
+ * Unbreak the KBDMAP command (broken in 3.70).
+ * EXTLINUX: fix the handling of the ADV when using CBIOS.
+ * ifcpu64.c32: simple COM32 module to select a 32- or 64-bit
+ kernel (and optionally 32-bit kernels with or without PAE.)
+ Eventually we want a scripting language for this
+ kind of stuff; a Lua module is under development.
+ * Fix parsing of the SERIAL command without a baud rate
+ specified.
+ * chain.c32: error out when try to boot an unbootable
+ partition.
+ * SYSLINUX: when building the Win32 installer, search for
+ MinGW under a large number of possible names.
+
+Changes in 3.70:
+ * PXELINUX: Support enhanced capabilities when running on top
+ of gPXE (http://www.etherboot.org/). In particular, support
+ URL-style syntax for filenames, and any protocol that gPXE
+ supports (except, currently, iSCSI and AoE.) This feature
+ is currently highly experimental.
+ * Substantial infrastructure changes to support files whose
+ length aren't known at open time (typically network
+ connections.) Please note that the semantics of some of the
+ comboot APIs have changed slightly; please see doc/comboot.txt.
+ * PXELINUX: We no longer require a TFTP server which supports
+ the tsize option for all transfers.
+ * PXELINUX: Integrate with the gPXE source base; unified image
+ now included as "gpxelinux.0".
+ * The source tree has been restructured; files that were
+ previously in the root have moved into the core, dos, gpxe,
+ and utils directories.
+ * "make install", "make netinstall", and "make extbootinstall"
+ have been updated massively. "make install-all" now installs
+ all three.
+ * Change default dir for auxiliary files from
+ /usr/lib/syslinux to /usr/share/syslinux.
+ * SYSLINUX: VFAT long filename support.
+ * MEMDISK: Any image less than 4096K (4 MB) is treated as a
+ floppy disk. The geometry-guessing code will recognize all
+ common extended formats, but it is still possible some very
+ exotic formats need geometry specification. Large floppies
+ and very small harddisks still need explicit specification.
+ * chain.c32: option "swap" to support swapping of BIOS drive
+ numbers. This is necessary to boot certain operating systems
+ (DOS, Windows) from a secondary drive.
+ * chain.c32: option "file=" to support loading a boot file from
+ the SYSLINUX filesystem instead of loading the boot sector
+ from the drive.
+ * chain.c32: option "seg=" to control the load location.
+ * chain.c32: option "ntldr=" as a shorthand for "seg=0x2000
+ file="; use this to load one of WinNT's loaders:
+
+ chain.c32 hd0 1 ntldr=/MiniNT/setupldr.bin
+
+ Note that the file needs to be in the SYSLINUX filesystem.
+ * chain.32: options "freedos=" and "msdos="/"pcdos=" as
+ shorthands for "seg=0x60 file=" and "seg=0x70 file="
+ respectively; use this to load FreeDOS's kernel.sys, MS-DOS's
+ io.sys or PC-DOS's ibmbio.sys.
+ * Change to the A20 algorithm which *MIGHT* help systems that
+ have systems which freeze when Syslinux is used with USB
+ keyboards. Note that this has been hard do verify, so I
+ would greatly appreciate feedback on it.
+ * Complex menu system: unbreak menus which has unnamed
+ submenus, like complex.c.
+ * Fix newline on the serial port for some com32 modules.
+ * chain.c32: support "boot" as the drive specification,
+ indicating the drive from which it was booted
+ (for syslinux/extlinux).
+ * SYSLINUX/EXTLINUX: support "localboot" with the same feature
+ set as ISOLINUX.
+ * Add an experimental MBR for GPT partition tables.
+ * Use $(CC) when determining compile flags.
+ * chain.c32: fix booting from logical partitions (Sergey
+ Vlasov.)
+
+Changes in 3.63:
+ * Fix errors in the PCI and DMI detection modules (Erwan Velu,
+ Sebastian Herbszt).
+ * Fix host dependencies and other issues in the build system.
+ * PXELINUX: Allow class E addresses as unicast.
+ * sdi.c32: module to load Microsoft System Deployment Images.
+ For additional information, please see:
+ http://msdn2.microsoft.com/en-us/library/ms838543.aspx
+ * EXTLINUX: Correct reading directories with deleted entries.
+ * Shuffle library: correct the handling of certain geometries
+ (an upward move with source material blocking the move); as
+ required by sdi.c32 but theoretically possible for other
+ formats as well.
+ * Add "make netinstall" to install /tftpboot.
+ * Fix some documentation files that didn't get moved/renamed.
+
+Changes in 3.62:
+ * Clean up garbage after "aborted." message.
+ * Clean up memdump.com filenames.
+ * Support SHA256 and SHA512 encrypted passwords.
+ * The shuffle library now can generate chained descriptors,
+ thus allowing pretty much arbitrarily complex memory maps.
+ * Handle command lines up to 2047 characters, the current
+ Linux kernel limit.
+ * vesamenu: support systems without linear framebuffer support
+ (sigh, what is this, 1993?) and 15-bit RGB modes.
+ * Move the label storage (for the command-line interface) to
+ high memory, removing the size limit and freeing up 64K of
+ low memory.
+ * Get rid of 4096-entry limit in the simple menu system.
+ * New hierarchial submenu support: see MENU BEGIN, MENU END,
+ MENU GOTO in doc/menu.txt.
+ * MENU QUIT allows creating a menu entry for returning to the
+ command line.
+ * ISOLINUX: Work around bug in certain Adaptec BIOSes,
+ patch by Bruce Robson.
+ * pngtopnm dependency removed from samples/ directory.
+ * Text documentation files (in doc/) renamed *.doc -> *.txt.
+
+Changes in 3.61:
+ * EXTLINUX: fix crash when accessing an empty file.
+ * elf.c32: If a PHDR segment is present, load it.
+ * Fix SHA-1 and MD5 passwords.
+ * ISOLINUX: fix booting when mastered without
+ mkisofs -boot-info-table (broken since 3.50, sigh...)
+ * Handle BIOSes which emit multiple contiguous valid
+ memory regions in the e820 map.
+
+Changes in 3.60:
+ * Support for "auxilliary data vector", a small amount of
+ writable storage. Currently only supported for EXTLINUX,
+ but the infrastructure is there for the other derivatives,
+ assuming a suitable storage location can be found.
+ * EXTLINUX: boot-once support (--once, --clear-once, and
+ --reset-adv).
+ * A command is now required to the EXTLINUX installer, i.e. at
+ least one of --install, --update, --once, --clear-once, or
+ --reset-adv.
+
+Changes in 3.55:
+ * PXELINUX: as per RFC 5071, PXELINUX no longer requires the
+ use of the magic cookie option (208) for unencapsulated
+ options. Currently it does not require it for
+ vendor-encapsulated options (vendor-option-space) either,
+ but that MAY be reverted in the future if it causes
+ problems.
+ * Documentation text files moved to a common "doc" directory;
+ man pages from the Debian project added to the "man"
+ directory.
+ * Correct bug with self-overlapping memory areas when using
+ the shuffle interface.
+
+Changes in 3.54:
+ * Add "menu separator", "menu indent", "menu disabled"
+ (see README.menu).
+ * vesamenu: fix handing of VESA modes with noncontiguous
+ memory buffers. In particular, Qemu/KVM sets up such a mode
+ when Cirrus Logic emulation is enabled (which is the
+ default.)
+ * Support for calling real mode functions using far calls,
+ with argument on the stack. This was implemented to support
+ the BIOS BBS specification, but subsequent experiments show
+ that the at least one of the most common BIOS cores, Award,
+ passes the presence check but doesn't actually implement the
+ functionality.
+
+Changes in 3.53:
+ * Fix bugs related to the $PnP BIOS functionality on some
+ platforms.
+ * PXELINUX: Fix the "naked" version of :: (suppress prefix.)
+ * elf.c32: better error messages.
+ * Faster operation under Intel VT virtualization.
+ * PXELINUX: Fix DHCP bootfile option.
+ * mkdiskimage: Support more than 1024 cylinders.
+ * (Hopefully) fix installer on non-x86 platforms.
+ * Fix shuffle_and_boot_rm, used by linux.c32.
+ * Fix shuffle_and_boot_pm on 386/486.
+ * ISOLINUX (at least): fix bss memory overwrite hang.
+ * MBR: Fix booting from logical partitions.
+ * Code cleanups.
+
+Changes in 3.52:
+ * Handle capitalized F-key commands in the menu system.
+ * Fix padding error when loading multiple ramdisks.
+ * Workaround for VMware crashing when trying to print a
+ message during early kernel boot (does not seem to work,
+ consider deleting.)
+ * chain.c32: add the ability to search for a specific MBR
+ signature at runtime.
+ * Fall back to the server identity option if the siaddr field
+ in the DHCP header isn't set. This seems to match the
+ behaviour of most PXE stacks.
+ * mkdiskimage: give the generated disk image an MBR signature.
+ * MEMDISK: Fix failures on some BIOSes.
+ * Simple menu system: new "MENU HIDDEN" option to not display
+ the menu unless the user presses a key.
+ * Simple menu system: support MD5-encrypted passwords (modern
+ Unix standard style, with "$1$" prefixes.)
+ * pcitest.c32: now functions as a full "lspci". Thanks to
+ Erwan Velu for this work.
+ * MEMDISK: Make EDD actually work.
+ * ISOLINUX: Fix for certain broken CD-ROM BIOSes which
+ randomly corrupted register FS.
+ * Simple menu system: fix memory overwrite bug that caused
+ some systems to lock up or behave weirdly.
+ * Fix building on 64-bit systems without a 32-bit libc installed.
+
+Changes in 3.51:
+ * EXTLINUX: Fix failure to find the configuration file.
+
+Changes in 3.50:
+ * New keywords allow the type of file to be specified in the
+ configuration file.
+ * It is now supported to load a different configuration file
+ with the CONFIG keyword.
+ * Fix API call 0x0019 (Read Disk.)
+ * MENU AUTOBOOT, MENU TABMSG, MENU PASSPROMPT allows
+ internationalization of menu messages.
+ * A new feature, TEXT HELP, allows the administrator to set
+ a multi-line help message for individual selections.
+ * Fix API call 0x0012 (Cleanup, shuffle and boot.)
+ * New API call "Cleanup, shuffle and boot to flat protected mode"
+ * New API call "Cleanup, shuffle and boot to real mode",
+ similar to API call 0x0012 but allows arbitrary register setting.
+ * Introduce a library interface for loading arbitrary binary
+ formats with relatively easily understood code. See
+ the elf.c32 module for an example on how to use it.
+ * New module "elf.c32", to load a protected-mode ELF kernel.
+ * MBR (old and new): Fix bug in CHS mode when LBA >
+ 65535*sectors.
+ * vesamenu: fix decoding of palettized PNG images.
+ * Update the Linux kernel boot protocol.
+ * PXELINUX: Press Ctrl-N at the boot prompt to read out the
+ network info.
+ * Instead of the (non-existent) MAC, use the client identifier
+ for networks like Infiniband and Firewire/1394.
+ * Add a new INCLUDE command to the core syslinux parser.
+ * Allow binding help text to F11 and F12.
+ * F-key help now available in the simple menu system.
+ * Disabled the polling for ARP during idle. It is simply too
+ slow on some (broken!) PXE stacks.
+ * PXELINUX: also try to fetch the config file based on UUID.
+ * SYSLINUX/EXTLINUX: New RAID mode (-r) which calls the BIOS
+ to load the next device (typically the next drive) on boot
+ failure.
+
+Changes in 3.36:
+ * MEMDISK: Disable EDD by default on floppy disks. EDD can be
+ enabled with the "edd" option and disabled with "noedd".
+ This (hopefully) should make Ghost work again.
+ * SYSLINUX: "unix" installer now uses Linux ioctls instead of
+ using libfat.
+ * New MBR which can boot from logical partitions.
+ * SYSLINUX: Fix bug in detecting special extensions which was
+ introduced in 3.35 :(
+ * PXELINUX: Unbreak chainbooting FreeBSD (and possibly others.)
+
+Changes in 3.35:
+ * MEMDISK: New "safeint" mode.
+ * MEMDISK: Be more compliant with the PnP BIOS spec.
+ * MEMDISK: Turn on EDD support by default.
+ * MEMDISK: Try to work on some machines on which it would not
+ work when there was no floppy drive in the system.
+ * Simple menu system: fix serial console support (broken in
+ 3.30).
+ * SYSLINUX: Support subdirectories. Like ISOLINUX, the
+ "current directory" is the directory in which syslinux.cfg
+ is found; this is searched for in the sequence
+ /boot/syslinux, /syslinux, /. As a side benefit, label names
+ like "linux-2.6.18" and "linux-2.6.19" are now supported.
+
+ To install ldlinux.sys in a subdirectory, pass the -d
+ directory option to the SYSLINUX installer.
+
+ This work was sponsored by slax.org (thanks, Tomas!)
+ * New API call: read disk.
+ * Invoke ONERROR on initrd load failure.
+
+Changes in 3.31:
+ * The simple menu system (menu.c32 and vesamenu.c32) now
+ support loading more than one configuration file at a time,
+ using MENU INCLUDE or by specifying multiple filenames.
+ * The MENU COLOR statement can now control the shadowing mode.
+
+Changes in 3.30:
+ * libcom32 extended to support graphics mode and graphical console.
+ * vesamenu.c32, new graphical version of the Simple
+ Menu System, see README.menu.
+ * New com32 modules by Erwan Velu do selection based on CPUID
+ or PCI devices present.
+ * RPM spec: add syslinux-tftpboot module; move syslinux by
+ default to the /usr/share/syslinux directory.
+ * RPM spec: extlinux is now a separate package.
+
+Changes in 3.20:
+ * EXTLINUX: New options --install (-i) and --update (-U), to
+ make it clear if a boot loader should be installed or
+ updated. For now, defaults to --install for compatibility;
+ a future version will require one of these options.
+ * New library functions to load and place files in memory.
+ * mboot.c32 bug fixes.
+ * Remove 8 MB kernel size restriction.
+ * Add "klibc" target for building unix/syslinux and
+ extlinux/extlinux with klcc (klibc-1.4.27 or later.)
+ * PXELINUX: Fail (and eventually reboot) if no configuration
+ file was found.
+ * COM32 module by Erwan Velu to make decisions based on DMI
+ info.
+ * Fix issue where going back and forth between menus a lot
+ would cause a hang.
+ * ISOLINUX: Fix bug which made "cd boot sectors" not work.
+
+Changes in 3.11:
+ * MEMDISK: Fix bug by which accessing the real floppy disk
+ as B: in MS-DOS was broken.
+ * Simple menu system: allow tweaking of the screen layout.
+ * Simple menu system: better command-line editing, correctly
+ handle command lines above 256 characters.
+ * PXELINUX: revert memory allocation change that caused
+ problems on some network cards.
+ * MEMDISK: Try work around a bug on some BIOSes when no
+ physical floppy disk is present in the system.
+ * Enable the 16550A FIFOs, if present, when doing serial
+ console.
+ * New "totaltimeout" command establishes a timeout without
+ regard for any user input.
+ * Simple menu system: timeout behaviour now more in line with
+ user expectations.
+ * Simple menu system: "ontimeout" should now work correctly.
+
+Changes in 3.10:
+ * gcc 4.0.1 compilation fixes.
+ * Add support for querying the PCI BIOS in libcom32
+ (used by ethersel et al.)
+ * Fix PCI handing (ethersel etc) on several old chipsets (and
+ VMWare.)
+ * Try to deal with systems with broken EBIOS.
+ * New API call to do "localboot".
+ * New API call to query features.
+ * New API call to run kernel image, a lower-level call than
+ "run command". See comboot.doc.
+ * Fix for bug in EBIOS code discovered by Arwin Vosselman.
+ * NOESCAPE security fix.
+ * Comments are now recognized even without a space following #.
+ * Fix incorrect handling of mixes of entries with and without
+ MENU PASSWD.
+ * The idle API call now harmlessly returns failure if it is a
+ no-op. That way the caller can decide whether or not to
+ bother invoking it again.
+ * Temporarily disable the idle API call on PXELINUX, due to
+ some platforms on which the idle API call seems to hang; this
+ problem has not yet been debugged.
+ * MEMDISK: the handling of DOSEMU-headered images was broken;
+ fix it.
+ * EXTLINUX: symlinks are now supported.
+ * Simple menu system: N and P now work correctly as hotkeys.
+ * MEMDISK: more BIOS bug workarounds.
+
+Changes in 3.09:
+ * gcc4 compilation fix.
+ * <BEL> (Ctrl-G) in message files now causes a beep.
+ * Reduce the command line to 511 characters; 1023 caused
+ memory overflows.
+
+Changes in 3.08:
+ * SYSLINUX: Fix performance regression (-s mode always
+ enabled.)
+ * Add API function for idle loop.
+ * libutil: Add do_idle() function for idle loop, make
+ get_key() use it.
+ * libutil: Add SHA-1 and base64 functions.
+ * Simple menu system: add password support.
+ * EXTLINUX: Sparse files now handled correctly.
+ * EXTLINUX: Large directories now handled correctly.
+ * ALL: At the prompt, Ctrl-X now forces text mode.
+ * Fix configuration file parsing error, that could cause
+ hangs.
+ * Rewritten advanced menuing system from Murali Ganapathy.
+ * MEMDISK: New "bigraw" mode to work around certain broken
+ BIOS flash programs.
+ * COM32 module to boot Multiboot systems, including Xen. See
+ com32/modules/mboot.doc.
+ * Max command line changed to 1023 characters. Note that the
+ kernel proper still can only handle 255 characters without
+ patching, and COM16 binaries can only handle 125 characters.
+
+Changes in 3.07:
+ * Fix chainloading (chain.c32).
+ * Fix zlib build problem.
+ * Use a private copy of <linux/ext2_fs.h>.
+
+Changes in 3.06:
+ * Fix typo that caused the ramdisk to load in the wrong place.
+
+Changes in 3.05:
+ * New API function "shuffle and boot"; allows COM32 modules to
+ load or construct (almost) arbitrarily complex objects,
+ e.g. a kernel and its initrd/initramfs in pieces, and have
+ the API core reorganize memory for booting. (A library API
+ for this function will be introduced in a later version.)
+ * The initrd= option now supports multiple filenames separated
+ by commas. This is mostly useful for initramfs, which can
+ be composed of multiple separate cpio or cpio.gz archives.
+ (Note: all files except the last one are zero-padded to a 4K
+ page boundary. This should not affect initramfs.)
+ * EXTLINUX: Fix API function 000Ah (get derivative-specific
+ info).
+ * libcom32/ethersel: Support PCI Config Mechanism #2 on
+ machines still infested with that hideous old hack.
+ * SYSLINUX: Fix directory-parsing bug.
+
+Changes in 3.02:
+ * SYSLINUX: The "unix" installer now sets the MS-DOS
+ attributes (hidden, system, readonly.)
+ * COM32 library: build the .lnx (test modules for running
+ under Linux) as architecture native modules, in case
+ i386 devel libraries aren't installed.
+ * EXTLINUX: Hack for systems which don't have BLKGETSIZE64
+ defined in the standard header files.
+ * Simple menu system: minor aestetic improvements, and try to
+ work better over a serial console (speed, and readability on
+ monochrome terminal emulators.)
+ * New CONSOLE directive to control output on the video console
+ (useful for dealing with some broken serial-forwarding
+ BIOSes.)
+ * New com32 module "ethersel" for searching for an Ethernet
+ card and selecting the proper version of Etherboot.
+ * EXTLINUX: Allow the user to override the detected geometry.
+ Add help.
+
+Changes in 3.01:
+ * EXTLINUX, SYSLINUX: Fix compile errors on some systems.
+ * EXTLINUX: Default to zipdrive geometry (64 heads, 32
+ sectors) if no other geometry can be detected.
+
+Changes in 3.00:
+ * SYSLINUX: Support FAT32 and EDD. As an unfortunate
+ consequence, LDLINUX.SYS is no longer an ordinary file; it
+ is block-mapped at install time, which means it can only be
+ written using the syslinux installers.
+ * SYSLINUX: Reorganize the source code for the installers;
+ each one of the installers (dos, win32, unix, mtools) is now
+ built in its own subdirectory. In particular, "mtools" is
+ the unprivileged installer which uses mtools; "unix" is the
+ privileged installer which uses system calls.
+ * SYSLINUX: Completely rewritten DOS installer in C.
+ * ALL: "label" statement information is now stored in a
+ compressed format, which means that a lot more labels are
+ permitted (500-1000 in a typical configuration, but depends
+ on the complexity.)
+ * EXTLINUX: New derivative, which boots from an ext2/ext3
+ filesystem.
+ * SYSLINUX: The DOS and Win32 installers can now optionally
+ write the boot sector to a file instead of the real boot
+ sector. This is not supported in the Linux installers,
+ however.
+ * ALL: New NOESCAPE command, disables the "hold down the Shift
+ key to display the prompt" behaviour.
+ * New simple menu system, as an alternative to the advanced
+ menu system already present. See README.menu for details.
+ * PXELINUX: Filenames can now be prefixed with an IP address
+ or DNS name plus :: (e.g. 192.0.2.1::filename or
+ server.domain.com::filename), which downloads a file from an
+ alternate TFTP server, or just a :: (e.g. ::filename), which
+ suppresses the common pathname prefix. See pxelinux.doc.
+ * SYSLINUX: Add an -m option to the DOS and Win32 installers
+ to write an MBR and -a to mark the partition SYSLINUX is
+ being installed on active.
+ * MEMDISK: Give a way to query the boot loader type while
+ running MEMDISK; see memdisk/memdisk.doc and
+ sample/mdiskchk.c.
+ * mkdiskimage: substantially improved mkdiskimage which, among
+ other things, can now be used to initialize USB keys as
+ zipdrives; see README.usbkey for more information.
+
+Changes in 2.13:
+ * MEMDISK: Fix command-line parsing "brown paper bag" class
+ bug.
+ * MEMDISK: Add "raw" mode to support the DOS boot disk from
+ WinME/XP, which seems to deliberately crash the system
+ when someone uses the "INT 15h mover" highmem API.
+ * Make "make install" do something sane for the com32
+ development environment.
+ * In the spec file, create a separate -devel RPM for the com32
+ development environment.
+
+Changes in 2.12:
+ * Simple C library, based on klibc, for writing COM32
+ programs.
+ * Fix the handling of file length in loading of COM32
+ programs.
+ * MEMDISK: Work around a linker bug by rearranging the code to
+ not use the linker for the 16-bit code.
+ * SYSLINUX: If we're building on a machine without a Win32
+ (mingw) compiler, just skip building syslinux.exe.
+ * ISOLINUX: Support non-mkisofs mastering programs, at least
+ as long as the image is single-session. For best results,
+ ISOLINUX should be the only boot loader installed.
+ * MEMDISK: Allow the user to specify that the simulated disk
+ should be write-protected.
+
+Changes in 2.11:
+ * ALL: Add an API call to get the configuration file name.
+ * SYSLINUX: Fix bug in 2.10 that prevented it from working
+ correctly for a lot of people.
+ * SYSLINUX: In the installer, make mtools a bit less fussy.
+ * Make the menu system compile with newer gcc's.
+
+Changes in 2.10:
+ * MEMDISK: Handle images compressed with zip as well as with
+ gzip. Some Windows-based image tools apparently generate
+ these kinds of images by default. Patch by Patrick
+ LoPresti.
+ * Major menu improvement from Murali Ganapathy.
+ * ISOLINUX: Wonderfully sick and brilliant workaround for
+ severe bugs in certain Award BIOSes; from Knut Petersen.
+ * SYSLINUX: Fix for the nomtools installed, from Frederic
+ Pasteleurs.
+ * PXELINUX: Fix handling of IP numbers in the ranges
+ 100-109 and 200-209.
+ * ALL: New option "allowoptions" (defaults to 1), which
+ controls if options are allowed on the command line or not.
+ * SYSLINUX: Support building under klibc (see the klibc
+ distribution for details.)
+
+Changes in 2.09:
+ * SYSLINUX: Remove residual setuid crap from
+ syslinux-nomtools.
+ * Handle video pages correctly when using the API functions.
+ * Handle compiling on an x86-64 platform correctly.
+ * Menu system from Murali Krishnan Ganapathy; see the menu
+ directory for information.
+ * COMBOOT: Allow COMBOOT programs to change screen text mode.
+ * COMBOOT: Correct the documentation of how to detect
+ SYSLINUX from COMBOOT!!!!
+ * COMBOOT: Fix "get key without echo" API function.
+ * SYSLINUX: Fix bug that affected the API open function.
+ * ALL: Improve the E820 memory parser, to work around some
+ buggy BIOSes.
+
+Changes in 2.08:
+ * Add new configuration command "ontimeout" to allow timeout
+ to have a different action than just pressing Enter.
+ * Add new configuration command "onerror" to allow a custom
+ command to be executed in case the kernel image is not found.
+ * Fix bugs in the COMBOOT/COM32 command-line parsing. APPEND
+ now works with COMBOOT/COM32 images.
+ * PXELINUX: Poll for ARP requests while sitting at the
+ prompt. This makes some boot servers a lot less unhappy.
+ * PXELINUX: Actually free sockets when we get a failure
+ (including file not found.) This bug would cause us to run
+ out of sockets and thus "go deaf" after a while.
+ * MEMDISK: Add an API to query for the existence of MEMDISK.
+ * SYSLINUX: Fix loading boot sectors (.bs/.bss) from floppy
+ disk.
+ * .c32 is now one of the extensions searched for
+ automatically.
+ * PXELINUX: RFBG.exe seems to randomly overwrite memory
+ location 0x5700. Thus, don't use it!
+ * PXELINUX: Change pathname length max from 63 to 127; change
+ max vkernels from 128 to 64.
+ * Support Ctrl-U -> kill entire command line input.
+ * The "samples" directory contains a (barely at all tested)
+ chain loading example, chain.c32, which may be used to
+ chainload local floppy disks and hard disks. Use with
+ "chain fdN" or "chain hdN [partition]"; N = 0 for the first
+ drive of each type.
+
+Changes in 2.07:
+ * MEMDISK: Workaround for BIOSes which go into a snit when
+ they get a RESET command for the floppy system when there is
+ no floppy in the system.
+ * PXELINUX: Add "ipappend 2", which passes the hardware
+ address of the boot interface to the kernel as a
+ command-line option.
+ * mkdiskimage: fix the generation of the end limit.
+ * PXELINUX: Fix multiple bugs in chainloading of other NBPs.
+ * MEMDISK: Fix bug that would occationally cause "ran out of
+ input data" when using compressed disk images.
+ * SYSLINUX: Updates for the win32 installer (from Lars Munch.)
+ * PXELINUX: PXELINUX-specific options are now recognized both
+ in a vendor-option-space (a.k.a. type 43 encapsulated) as
+ well as in a site-option-space (unencapsulated.)
+ * COM32: Don't crash when DS != 0.
+ * COMBOOT/COM32: Make file reading work correctly. Thanks to
+ Phung Chi Kien for submitting a test program.
+
+Changes in 2.06:
+ * ALL: Fix problem that would occationally cause a
+ boot failure, depending on the length of the kernel.
+ * ISOLINUX: Fix problem that would occationally cause a
+ boot failure, depending on the length of directories.
+ * SYSLINUX: Win32 installer now flushes buffers.
+ * ppmtolss16: Be fully compliant with the PNM spec;
+ actually process comments in the header and odd
+ alignments of the various parameters, as well as
+ "plain" (not raw) files and PBM and PGM files.
+ * PXELINUX: Lower the default MTU to 1472 in order to deal
+ with systems with slightly nonstandard MTUs, and PXE
+ stacks which don't defragment correctly. Unfortunately this
+ is very hard to test dynamically.
+
+Changes in 2.05:
+ * PXELINUX: Add a default query based on the hardware address
+ of the boot device. This is in lower case hexadecimal form
+ separated by dashes and including the hardware type, for
+ example, the Ethernet (type 1) address 88:99:AA:BB:CC:DD
+ would query the file pxelinux.cfg/01-88-99-aa-bb-cc-dd.
+ * PXELINUX: Fix bug involving non-IP-based config file names.
+ * SYSLINUX: New installer for WinNT-based systems, from Lars
+ Munch.
+ * MEMDISK: Fix handling of memory region overlap when
+ decompressing. Thanks to Mikhail Kupchik for identifying
+ the problem.
+
+Changes in 2.04:
+ * ALL: Reclaim even more low memory by observing that
+ comboot_seg == real_mode_seg is perfectly fine, and by the
+ fact that the 1000h segment managed to get unused in all
+ derivatives...
+ * PXELINUX: Attempt to negotiate full Ethernet-sized blocks
+ (1468 bytes) using the blksize option.
+ * SYSLINUX: Resurrect the old no-mtools version of the
+ installer, although as a root-only tool. Some distributors
+ have indicated that they need a small standalone installer.
+ * MEMDISK: Fix a memory offset computation error when
+ installing compressed disks which generally would cause
+ 1 MB of memory to be wasted.
+ * MEMDISK: Fix installing the E820 memory map. Calling
+ INT 15h AX=0E820h with MEMDISK 2.03 loaded would give a
+ completely corrupt memory map.
+ * SYSLINUX: Make libsyslinux a dynamic library, so that it can
+ be updated separately from client programs. The whole idea,
+ after all, is to enable alternate programs to become
+ syslinux installers.
+ * Include an rpm spec file in the distribution, so rpmbuild
+ -ta works.
+
+Changes in 2.03:
+ * Actually support comment lines in the configuration file.
+ * PXELINUX: Try to resolve some problems with stack switches.
+ * PXELINUX: Handle PXE stacks with broken routing.
+ With these workarounds, the remote install PXE boot floppy
+ (rbfg.exe) from Argon Technologies should work correctly.
+ * Fix problems with Perl scripts in UTF-8 locales.
+ * You probably need NASM 0.98.34 or later to compile this
+ version. 0.98.36 is recommended.
+ * MEMDISK: Now supports gzip compressed images.
+
+Changes in 2.02:
+ * SYSLINUX: Security flaws have been found in the SYSLINUX
+ installer when running setuid root. Rewrite the SYSLINUX
+ installer so it uses mtools instead. It therefore now
+ requires mtools (specifically mcopy and mattrib) to exist on
+ your system, but it will not require root privileges and
+ SHOULD NOT be setuid.
+
+Changes in 2.01:
+ * MEMDISK: Fix memory sizing bug when the ramdisk crosses the
+ 16 MB boundary.
+ * MEMDISK: Add a "pause" option to stop immediately before
+ booting, to read off the messages.
+ * MEMDISK: Support disk images with DOSEMU headers.
+ * Update the mkdiskimage script to handle newer mtools
+ versions, and be able to generate disk images with DOSEMU
+ headers (controlled by the -d option).
+ * Fix the COM32 sample program.
+ * PXELINUX, ISOLINUX: Fix some COMBOOT API calls.
+ * PXELINUX: Doc fix.
+ * Build SYSLINUX into a small library for encapsulation into
+ other programs (however, please keep in mind this is a GPL'd
+ library.)
+ * SYSLINUX: Make installer work with "owner" in /etc/fstab.
+ * SYSLINUX: Fix issue with working on nonpartitioned hard disk
+ devices. THIS CONFIGURATION IS NOT RECOMMENDED.
+
+Changes in 2.00:
+ * ALL: Add support for "COM32" (32-bit COMBOOT) images.
+ * ALL: Add an API for COMBOOT/COM32 images. See comboot.doc
+ for details. There is a C development environment for
+ COM32 being created; it should be ready at some point in
+ the future.
+ * Fix mbr.asm so that it actually works.
+ * SYSLINUX: The syslinux installer *SHOULD* now be safe to
+ run setuid root.
+ * PXELINUX: Fix bug where PXELINUX would override random
+ chunks of the UNDI code segment! Thanks to Kevin Tran for
+ finding this bug.
+ * ISOLINUX: Fix a bug related to slashes in pathnames.
+ * ISOLINUX: Fix a bug in handling initrds over 128 MB.
+ * ALL: Make the <Ctrl-V> key print out the version; this is
+ to help debugging.
+ * Add a small script, mkdiskimage, to create a DOS-formatted
+ hard disk image using mtools. This may be useful in
+ conjunction with MEMDISK.
+ * ISOLINUX: Search for a /boot/isolinux directory as well as
+ /isolinux.
+ * ALL: Fix a bug related to very long configuration files.
+ * PXELINUX: Work around a NASM bug which would result in no
+ delay before reset if an error occurs.
+
+Changes in 1.76:
+ * ISOLINUX: Remove code no longer used which caused hangs on
+ some Toshiba laptops.
+
+Changes in 1.75:
+ * ALL: NASM 0.98.32 or later is now required to build
+ SYSLINUX from sources.
+ * SYSLINUX: put back in the workaround for the BIOS floppy
+ table. This seems to be a requirement for "extended" floppy
+ formats to work correctly.
+ * SYSLINUX: No longer warn if one is trying to boot on a 286
+ or older. The above BIOS workaround no longer fits if the
+ requirement to use only 8086-compatible code in the early
+ boot is maintained. It made sense in 1994, but in 2002 a
+ 286 or older is a museum object.
+ * SYSLINUX: Use a downright bizarre, stateful algorithm to try
+ to guess the maximum transfer size. I am *hoping* this will
+ cut down on the number of systems for which -s is required
+ to work at any acceptable speed.
+ * ISOLINUX: Add a few more workarounds for various broken El
+ Torito BIOSes.
+ * Make sure .depend files aren't accidentally packed...
+ * ALL: Fix bugs in the extension-detect code; this caused
+ files like COMBOOT images and CD boot sectors to be
+ mis-identified as Linux kernels and rejected.
+ * ALL: Fix the return from COMBOOT.
+ * ALL: Do some of the early groundwork for supporting DOS
+ system calls in COMBOOT.
+ * Get rid of unnecessary "near" directives, making the code
+ bigger.
+ * PXELINUX: Put the PXE stack back in the init state before
+ invoking a chain-loaded NBP.
+ * PXELINUX: Actually found the combination of calls that
+ allows some (most?) PXE 2+ stacks to be unloaded from memory
+ properly.
+ * PXELINUX: Add "keeppxe" command-line option to disable
+ the standard unloading of the PXE stack.
+
+Changes in 1.74:
+ * SYSLINUX: fix bug that would cause valid kernel images to be
+ labelled "invalid".
+
+Changes in 1.73:
+ * Work on removing gratuitous differences between modules.
+ * Break up the source in common and module-specific files.
+ * PXELINUX: Allow chaining of other PXE NBPs.
+ * ISOLINUX: Allow loading "CD-ROM boot sectors".
+ * ALL: generalize the definition of a boot sector/NBP.
+
+Changes in 1.72:
+ * PXELINUX, ISOLINUX: Fix bugs in the new core code.
+
+Changes in 1.71:
+ * Fix a "brown paper bag" class bug in the new core code.
+
+Changes in 1.70:
+ * Major code restructuring.
+ * Relax the conventional memory limits somewhat.
+ * MEMDISK: Set up the "version number string" pointer in the
+ header correctly.
+ * SYSLINUX: Fix, again, "the bug that won't die": the use of
+ the offset parameter with the SYSLINUX installer.
+ * SYSLINUX: Fix possible superblock corruption problem in the
+ SYSLINUX installer.
+
+Changes in 1.67:
+ * Handle bug in the location of initrd.
+
+Changes in 1.66:
+ * MEMDISK: Make compile with newer versions of gcc.
+
+Changes in 1.65:
+ * ISOLINUX: Support booting disk image files (to boot DOS or
+ other non-Linux operating systems), *IF* the BIOS works
+ correctly; unfortunately many BIOSes apparently don't.
+ * Support Linux boot protocol version 2.03 (explicitly
+ specify the initrd address limit.)
+ * Handle small "pseudo-kernels"; images that use the Linux
+ kernel boot protocols but are less than 64K in size.
+ * MEMDISK: New subsystem; this is a driver which allows
+ legacy OSes to boot using an in-memory simulated disk.
+ See memdisk/memdisk.doc for more info.
+ * PXELINUX, ISOLINUX: Correctly handle files larger than 65535
+ blocks (32 MB for PXELINUX, 128 MB for ISOLINUX.)
+ * PXELINUX: Make a best-effort attempt at freeing all memory
+ claimed. From the looks of it, it will fail on most PXE
+ stacks.
+
+Changes in 1.64:
+ * Limited support for hardware flow control when using a
+ serial port console.
+ * Support specifying the serial port I/O address explicitly.
+ * Make DOS installer hopefully behave more nicely when used on
+ recent Windows versions.
+ * Fix returning to text mode when a font has been specified.
+ * Attempt to detect missing serial port hardware and disable
+ the serial port if there is nothing there.
+
+Changes in 1.63:
+ * Make the ppmtolss16 program handle color conversion more
+ correctly.
+ * Clean up "make install" target, honour INSTALLROOT if it
+ exists.
+ * SYSLINUX: Fix stack-smash bug identified by Steffen
+ Winterfeldt.
+ * Hopefully fix return-to-text-mode on some graphics cards.
+ * ISOLINUX: Bug workaround for Award BIOS 4.51, and perhaps
+ other buggy BIOSes as well.
+
+Changes in 1.62:
+ * PXELINUX: Allow the DHCP server to override the
+ configuration file name and pathname prefix, using
+ "site-specific" DHCP options.
+ * PXELINUX: Documentation fixes.
+ * PXELINUX: Fix the "ipappend" option; the last two values
+ were reversed vs. what the kernel expected.
+ * Introduce a way to return to text mode once we are already
+ in graphics mode. This may be useful for F-key help
+ screens.
+ * Fix several bugs in the way return to text mode was handled.
+
+Changes in 1.61:
+ * ISOLINUX: Support full pathname searches. Max length for a
+ pathname is 255 characters. As a result, only 64 "label"
+ statements are supported in ISOLINUX.
+ * PXELINUX: Max filename length extended to 63 characters.
+
+Changes in 1.60:
+ * Add support for graphical splash screens.
+ * Add mode control characters, which allows you to control
+ message display output depending on output mode (text,
+ graphics, or serial port.)
+ * ISOLINUX: New program, which boots Linux from a CD-ROM
+ without using floppy emulation mode. See isolinux.doc for
+ more details.
+ * PXELINUX: Don't search for boot sector file types, since
+ they don't work anyway.
+ * SYSLINUX: Document the LOCK command for Win9x, and the error
+ dialog box for WinNT/2K.
+
+Changes in 1.54:
+ * PXELINUX: Fix code for finding !PXE from PXENV+. This was
+ due to a spec bug; match the most recent spec since that
+ seems to be what implementations actually do.
+ * SYSLINUX: Add some smarts to the boot sector, which
+ hopefully should reduce the number of systems which require
+ stupid mode ("syslinux -s").
+ * PXELINUX: Document further some of the pathologies with old
+ PXE stacks.
+ * When specifying a "default" command line, no longer
+ automatically appent "auto". See the "DEFAULT" command in
+ syslinux.doc for more information.
+ * PXELINUX: Clean up the allocation of local socket numbers.
+
+Changes in 1.53:
+ * PXELINUX: Rename pxelinux.bin to pxelinux.0, to match what
+ most PXE servers seem to expect.
+ * PXELINUX: Update the DHCP/boot server setup documentation.
+ * PXELINUX: Support new "localboot" option for "label"
+ sections.
+ * PXELINUX: More robust parsing of DHCP/boot server packets.
+ * PXELINUX: Include a small utility program "gethostip" to
+ compute hexadecimal IP addresses.
+
+Changes in 1.52:
+ * PXELINUX: Fix bugs introduced by new A20 code. (SYSLINUX
+ has also been changed for code consistency reasons, but I'm
+ pretty sure the changes are don't care on SYSLINUX.)
+ * Documentation updates.
+ * PXELINUX: Add "ipappend" option to generate an ip= option to
+ the kernel.
+
+Changes in 1.51:
+ * PXELINUX: Not all PXE stacks fill in the IP address for a
+ type 3 cached info query. Use a type 2 cached info query
+ for this information (only.)
+ * Yet another attempt at A20 coding. Now support BIOS call
+ 15:2401 as well, and handle machines which always have A20
+ on separately.
+ * Support memory detection using INT 15h, AX=0E820h. BIOS
+ manufacturers have apparently gotten sloppy about keeping
+ INT 15h, AX=0E801h working properly.
+ * Don't issue <CR><LF> onto the serial port when we're doing
+ screen wraparound.
+
+Changes in 1.50:
+ * Yet another A20-code update. It seems some "legacy-free"
+ machines and embedded gear simply don't have a KBC to talk
+ to, and that waiting for one will wait forever. Sigh.
+
+Changes in 1.49:
+ * SYSLINUX: Implement a hack for BIOS drivers which hog significant
+ chunks of low memory during boot. (Note: PXELINUX already
+ had this modification. SYSLINUX does still require that the
+ low 512K is available; PXELINUX requires 384K. Machines
+ with a physical memory hole in the low 640K cannot boot
+ Linux no matter what.) Depending what the reason is for the
+ memory hole, a new kernel (2.4.0-test3-pre3 or later) may be
+ required.
+ * SYSLINUX: Default installer binary now compiled against
+ glibc 2.1. If this is inappropriate for your system and you
+ still want to use the offical version of SYSLINUX, please
+ follow the instructions in "distrib.doc" to rebuild the
+ installer.
+ * SYSLINUX: Linux installer program now supports -o <offset>
+ option which does a loopback mount with the
+ -o loop,offset=<> option. Useful to run SYSLINUX on an
+ individual partition of a whole-harddisk image.
+ * Include the source code to a Master Boot Record (MBR)
+ functionally equivalent to the one installed DOS except it
+ includes EBIOS support, and should be resistant to geometry
+ changes. The MBR code is public domain.
+ * PXELINUX: Fix "double p" bug: if the tftp prefix was null,
+ all filenames would get a "p" preprended, e.g.
+ "ppxelinux.cfg" and "pvmlinux".
+
+Changes in 1.48:
+ * PXELINUX: Workaround for PXE ROMs based on the Intel PXE PDK
+ 3.0 build 071 and earlier: missing !PXE structure pointer.
+ * PXELINUX: Handle larger BOOTP/DHCP packages.
+ * PXELINUX: The command line passing was broken; fix.
+ * PXELINUX: Make COMBOOT images work.
+ * PXELINUX: Documentation on how to make booting work using
+ the PDK 3.0-derived clients, which aren't so generous as to
+ allow booting with only "PXEClient" specified.
+
+Changes in 1.47:
+ * PXELINUX: RFC 1123 states that a TFTP implementation MUST
+ use adaptive timeout, "at least an exponential backoff of
+ retransmission timeout is necessary." Implement a very
+ simple exponential backoff for retransmits.
+ * PXELINUX: Updated documentation, including pointer to new
+ TFTP server.
+ * PXELINUX: When sending ERROR due to bad OACK, use the proper
+ destination port number (why are TFTP port numbers so odd?)
+ * PXELINUX: If the boot dies in the middle somewhere,
+ eventually give up and reset the machine (unattended
+ operation.)
+
+Changes in 1.46:
+ * New program PXELINUX to do network booting using a
+ PXE-compliant (Pre-Execution Environment) network booting
+ PROM. See pxelinux.doc for details.
+
+Changes in 1.45:
+ * Serial console support. See syslinux.doc for details.
+
+Changes in 1.44:
+ * Change HIGHMEM_MAX to 38000000h to (hopefully) avoid the
+ kernel stepping on it; 3f000000h was apparently a higher
+ limit than the kernel used!
+
+Changes in 1.43:
+ * Add sys2ansi.pl script to display the contents of a
+ colorized SYSLINUX file.
+ * Changed the io_delay once again, after a report that the
+ old delay port causes hangs on some systems.
+
+Changes in 1.42:
+ * Frob the "fast A20 gate" port as well as the keyboard
+ controller; will this help systems with problems?
+ * Be even more paranoid about A20, unfortunately even this
+ seems to be not paranoid enough... what I don't understand
+ is that if there is hardware out there *this broken*, how
+ can it run Linux at all? Report an error message rather
+ than hang forever if A20 is stuck.
+ * Include some intermediate files in the distribution, plus
+ provide a "make installer" target for distributors to relink
+ the install programs only. I would prefer the syslinux boot
+ loader proper to be "binary clean" for debuggablity -- use
+ "make clean ; make installer" to rebuild the installers only.
+
+Changes in 1.41:
+ * Don't get confused by directories, volume labels, or VFAT
+ long names.
+ * Use INT 15h, AX=0E801h to query memory size before trying
+ INT 15h, AH=88h. This not only provides more headroom
+ between the kernel and the initrd on large-memory machines,
+ but it appears some recent BIOSes actually have started
+ returning garbage for the AH=88h (older) call.
+ * Trust high memory beyond the 15 MB mark if the user has
+ specified it, or if obtained with INT 15h, AH=0E801h (with
+ no memory holes above 1 MB.)
+
+Changes in 1.40:
+ * Increase A20M delay and put in a test to avoid problems on
+ certain IBM Thinkpads (thanks to Donnie Barnes of RedHat
+ for vital info on this one.)
+ * Support COMBOOT style boot command images.
+ * Support chain loading (foreign operating systems, e.g. DOS).
+ * Include a new "copybs" DOS utility to copy a boot sector to
+ a file (under Linux, use "dd".)
+ * Fix the DOS installer to work for disks over 32 MB.
+ * SYSLINUX should now handle disks with more than 65536 tracks.
+
+Changes in 1.37:
+ * Fix a bug that caused "label" statements in syslinux.cfg to
+ not be handled properly.
+ * Updated the documentation. Among other things, we now allow
+ up to 128 "label" statements.
+
+Changes in 1.36:
+ * Fix for booting old (pre-initrd) kernels.
+ * It seems at least some versions of OS/2 doesn't set up all
+ the fields in the superblock correctly. Account for that.
+ * Fix bug that caused boot failure when using the mem= option.
+
+Changes in 1.35:
+ * Loading from partitions now should work properly. (Actually
+ tested, this time. You should even be able to dd a floppy
+ to a partition and boot from it.)
+ * Removed large workaround code for an alleged ancient BIOS
+ bug I have never actually seen. The -s option should work
+ on those machines, anyway.
+ * Support for simple keyboard remappings, same as used by
+ LILO (once again to support localization.) The program
+ keytab-lilo.pl from the LILO distribution included to
+ generate such maps.
+ * Added a "safe, slow and stupid" (-s) option to the
+ installers. This option will lobotomize the boot sector to
+ hopefully work on even very buggy BIOSes.
+
+Changes in 1.34:
+ * Ability to load a VGA font on bootup (for localized Linux
+ distributions.)
+
+Changes in 1.33:
+ * Bug fix in the Linux installer.
+ * Added a workaround for a bug in certain AMI/Intel BIOSes
+ when booting from CD-ROM.
+ * Documentation changes.
+
+Changes in 1.32:
+ * FAT16 filesystems are now supported.
+
+Changes in 1.31:
+ * Now compiles under Linux, using NASM, rather than using
+ Turbo Assembler under DOS. See http://www.cryogen.com/Nasm
+ for information about NASM.
+ * Linux-hosted SYSLINUX installer, as well as a
+ rewritten DOS installer (now is written in assembler, so we
+ don't need Turbo C.)
+
+Changes in 1.30:
+ * Added support for loading bzImage and initrd loading, and made
+ SYSLINUX new-setup-code aware (SYSLINUX 1.30 id=0x31).
+ * Added LILO-style kernel labels; see the LABEL and IMPLICIT
+ keywords in README file.
+ * Added support for colorization of intro and help screens.
+ * The vga= option is now handled correctly.
+ * Massive rewrite of large chunks of the code in order to
+ support the first two new features.
+
+Changes in 1.20:
+ * Added simple online help at the "boot:" prompt.
+ * Removed 2880K image as I no longer have access to such a
+ floppy drive. (Donations accepted!!)
+ * Decided to distribute the source in a subdirectory rather
+ than in a nested zipfile.
+
+Changes in 1.11:
+ * Removed a sanity check which would cause booting to fail on
+ Phoenix BIOS version 4.03. Apparently this BIOS is buggy.
+
+Changes in 1.10:
+ * Added configuration file SYSLINUX.CFG. This file contains all
+ configurable options, and can be edited from any OS which can
+ access an MS-DOS filesystem; there is no longer a need to run
+ SYSLINUX.EXE except to write the boot sector.
+ * Default command line now given by "default" line in config
+ file.
+ * LINUXMSG.TXT and BOOTMSG.TXT hard-coded file names replaced by
+ "display" and "prompt" lines in config file.
+ * LILO-style option appending now supported ("append" line in
+ config file).
+ * Prompt timeout is now supported ("timeout" line in config
+ file). The timeout is cancelled when anything is typed on the
+ command line.
+ * Pressing <ESC> or <Ctrl-C> at the Loading... stage now aborts
+ the kernel loading in progress and returns the user to the
+ boot: prompt.
+ * The installer now automatically sets the READONLY flag on
+ LDLINUX.SYS.
+ * Added 2880K disk image.
+
+Changes in 1.03:
+ * Fixed bug that would prevent booting from double-density
+ floppies and other DOS filesystems with multiple sectors per
+ cluster.
+ * Added 720K disk image.
+ * Changed default kernel name on disk images to LINUX.
+
+Changes in 1.02:
+ * Fixed bug that would garble the command line on recent kernels
+ with more than 4 sectors of setup code (this wasn't really a
+ *bug*; rather, a kernel change broke the code. Unfortunately
+ the Linux boot interface is still sorely undocumented).
+ * Added BOOTMSG.TXT file support (message file which does not
+ force display of the boot prompt).
+
+Changes in 1.01:
+ * Fixed bug on some (most?) 386 BIOSes would require two boot
+ attempts.