changes

linux 的引导程序源码The Microsoft&reg Windows&reg Software Development Kit (SDK) provides the documentation

  Boot loader
  -----------

    - added ability to load data (e.g. kernels) at addresses >= 0x100000
    - added support for loading an initial RAM disk
    - any_*.b became too big when using REWRITE_TABLE
    - included trimmed sector read function for first.S by Ted Ts'o
    - now prints spaces before error codes
    - temporarily removed support for REWRITE_TABLE
    - added support for heap size indication to kernel setup.S
    - added compile-time option XL_SECS for extra large disks

  Map installer
  -------------

    - new option INITRD to load an initial RAM disk
    - added support for "big" kernels (> 0.5 MB compressed), which are loaded
      directly at 0x100000
    - long quoted strings can now be distributed over several lines using
      a backslash
    - environment variables are accessible in lilo.conf with $name or ${name}
    - now properly identifies attempts to map from NFS and such
    - refuses to overwrite unsuitable partitions
    - caches device names and numbers, thereby significantly reducing the
      number of readdir and stat system calls (typically, the total number of
      system call decreases by about 80%)
    - temporarily removed support for REWRITE_TABLE
    - geometry.c:exists now opens devices read-write in order to avoid
      reading from CD-ROM devices (patch by Alain Knaff)
    - added a warning if COMPACT is used with LINEAR

  Documentation and installation
  ------------------------------

    - documentation, QuickInst, and on-line usage information no longer mention
      the disktab file (a DISK section should be used instead)
    - mkdist now uses the VERSION file
    - distribution now includes .lsm file
    - LILO is now compiled without -O2
    - updated FTP references and rewrote them to conform to RFC1738


Changes from version 16 to 17 (19-DEC-1995)
-----------------------------

  Boot loader
  -----------

    - changes for FALLBACK and new map section structure (see below)
    - LCF_READONLY now disables the LOCK option (and FALLBACK too)
    - added command-line option  kbd  to preload keyboard buffer
    - write errors are now reported (Wxx)
    - chain loaders now support changing the active partition (enabled with
      REWRITE-TABLE)
    - chain loader can also "un-hide" a DOS partition if its partition type
      has been changed by OS/2 BM (build-time option FIX_TYPE)
    - when enabling HIDE_DOS in addition to FIX_TYPE, DOS partitions (except
      for the one being booted) are hidden, just like OS/2 BM does (build-time
      option HIDE_DOS)

  Map installer
  -------------

    - added FALLBACK option to change default command line before booting
      the current image
    - added REWRITE-TABLE option to patch partition table at boot time
    - added REWRITE_TABLE build-time option to enable REWRITE-TABLE
    - added DISK section flag INACCESSIBLE to mark disk as inaccessible for
      the BIOS so that the map installer can refuse bad mappings
    - options and fallback sectors are now at the beginning of map sections
    - -q and -R were accidentially marked as optional in usage
    - fixed incorrect partition check for  other = <non-root>

  Documentation and installation
  ------------------------------

    - changed LILO version numbers to always be of the form <number> instead
      of 0.<number>
    - README now also contains the version number
    - make install  now strips /sbin/lilo instead of trying to strip /sbin
    - various bug fixes in QuickInst
    - added file VERSION containing the current version number and new
      make target  version  to rename ../lilo to ../lilo-<version>
    - changed a footnote which yielded an asterisk at the end of a command
      line in the ASCII README
    - -q and -R were accidentally marked as optional in command-line
      descriptions
    - mentioned -D option in command line description
    - new section "System overview" in the user's manual and several minor
      additions
    - a few minor corrections and addition of unusual error messages
    - the last traces of "old-style" configuration have been removed


Changes from version 15 to 16 (26-FEB-1995)
-----------------------------

  Boot loader
  -----------

    - added register dump boot sector (dump.S) for debugging
    - chain loaders now clear BP. This might help in some cases where DOS
      refused to boot.

  Map installer
  -------------

    - really fixed -R this time
    - now suggests to "use a DISK section" (instead of disktab) if HDIO_REQ
      fails
    - removed incorrect error message when using a disktab
    - added check to detect CD-ROMs with major numbers of hard disks
    - no longer complains about corrupt partition table if 3D address is
      smaller than linear address and (3D) cylinder is 1023  (OS/2 does
      is this way)
    - LOADER is now required when booting an operating system from any device
      than the first hard or floppy disk
    - changed header protection macros from _xxx_H_ to xxx_H
    - added (untested) support for 2nd IDE controller (major 22)

  Documentation and installation
  ------------------------------

    - user.tex is now compatible with LaTeX 2e (\textfont0 problem)
    - tech.tex now avoids \SetFigFont (LaTeX 2e again)
    - /sbin/lilo is now optimized and stripped when installing
    - ASCIIfied "Booting basics" section
    - removed all references to the old directory structure
    - added description of LOCK in config file
    - updated FD TMC-1680 warning
    - added reminder to re-run /sbin/lilo when modifying partition tables
    - updated list of kernel options
    - added detailed description of >2 disks and >1024 cylinders
    - added description of putting /boot on a DOS partition
    - reordered sections in "Installation and updates"
    - updated tech.tex


Changes from version 14 to 15 (23-OCT-1994)
-----------------------------

  General
  -------

    - upon popular demand, a copyright notice has been added

  Boot loader
  -----------

    - now also drains the keyboard type-ahead buffer
    - new command-line option "lock" to make the specified command line the
      default for the following boots too
    - default command line execution can now be interrupted in prompt mode too

  Map installer
  -------------

    - fixed -R arguments handling bug
    - fixed -P argument handling bug
    - fixed yet another recursion problem with /dev/fd -> /proc/self/fd
    - added option -D and configuration variable DEFAULT to specify the
      default image without changing the oder of entries in /etc/lilo.conf
    - added configuration variable LOCK to make the specified command line the
      default for the following boots too
    - added disk geometry configuration in the general configuration file.
      /etc/disktab is now considered obsolete.
    - added option -w and configuration variable NOWARN to disable some
      warnings
    - added warning when putting the boot sector on a non-boot disk
    - added warning for possibly inaccessible devices (e.g. third disk)
    - added warning for disks/partitions with more than 1024 cylinders
    - added warnings for bad permissions of the configuration file
    - fixed handling of floppies in geo_open_boot
    - removed erroneous call to part_verify when booting other systems
      from files
    - added support for variable-size setup segments as supported by kernels
      >= 1.1.43
    - restructured verbosity levels
    - allowed escaping of backslashes in quoted strings (/etc/lilo.conf)
    - /sbin/lilo -q -v  now displays all settings

  Documentation and installation
  ------------------------------

    - lots of things have been restructured
    - many changes to describe the current Linux environment
    - "new" directory structure is now the default
    - README is now generated from user.tex by a Perl script
    - lots of minor corrections and clarifications
    - added a copyright notice and adapted several comments
    - QuickInst: updated default kernel names
    - QuickInst: now runs  /sbin/lilo -t  before trying to install
    - doc/Makefile: removed extra "Label(s) may have changed" output
    - disktab: changed header comment and added second example line
    - /etc/disktab is no longer automatically created by  make install
    - linking /etc/lilo/install -> /sbin/lilo is no longer suggested
    - removed mkbindist. I don't think anybody used it anyway.


Changes from version 13 to 14
-----------------------------

  Map installer
  -------------

    - added a few missing closedirs to device.c:scan_dir
    - added detection of directory loops to device.c:scan_dir and
      geometry.c:last_dev
    - fixed handling of dangling links in /dev
    - new option -u [ device ] to restore boot sector. Unsafe mode with -U
    - fixed/improved usage message

  Documentation and installation
  ------------------------------

    - QuickInst: did not write "other" sections to configuration file
    - QuickInst.new: improved handling of disks without active partitions
    - QuickInst.new now knows about /etc/disktab (relict from Shoelace,
      still in some distributions)
    - QuickInst.new now uses *_d.b chain loaders when configuring non-Linux
      systems on the second disk


Changes from version 12 to 13
-----------------------------

  General
  -------

    - BSS is no longer cleared by LILO, because the kernel itself does
      that now.
    - added support for the new directory structure. Makefile and QuickInst
      come in .old and .new versions. See INCOMPAT for details.
    - removed support for unstripped kernels. Therefore, mkck is no longer
      part of the distribution.

  Boot loader
  -----------

    - added missing  seg es  override to UI_MAGIC check at "input".

  Map installer
  -------------

    - new options LITERAL and APPEND.
    - the root setting is no longer being shown on -q -v
    - the configuration file may now contain quoted strings in which spaces
      and equal signs do not have to be escaped.

  Documentation and installation
  ------------------------------

    - fixed bug in QuickInst that prevented correct renaming of the config
      file when ROOT is set.
    - added comment to disktab indicating that it is typically not needed.
    - distributed files are now readable for group and other.
    - mkdist is now included in the distribution.
    - changed the name of kernels from "(traditional) boot image" to
      "kernel image".
    - changed the name of the string passed to the kernel from "command
      line" to "parameter line".
    - removed obsolescent terms "rootimage" and "bootimage".
    - fixed documentation bug claiming only kernels can be protected by
      passwords.
    - fixed some additional minor documentation errors.


Changes from version 11 to 12
-----------------------------

  Boot loader
  ----------

    - removed accidential swapping of A:/B: when swapping C:/D: from
      the chain loader.
    - added new chain loader any_b.b (swaps A:/B:)
    - fixed incorrect handling of drive number resetting in swapping
      versions of the chain loader.
    - now generates diagnostics when failing to load the second stage
      loader.
    - new compile-time option NO1STDIAG to disable these diagnostics.

  Map installer
  -------------

    - fixed stat/fstat when creating temporary devices.
    - subdirectories of /dev are now recursively searched for disk devices
      in addition to /dev
    - devices are now counted by highest device number, not by name.
    - some minor fixes.

  Documentation and installation
  ------------------------------

    - QuickInst now warns if there is an obsolete LILO boot sector on
      the MBR.
    - QuickInst is now prepared to handle symbolic links hda -> sda
    - other minor fixes to QuickInst.
    - removed all references to compound unstripped kernels from the
      user's guide.
    - activate is now compiled as a stripped, statically linked, impure
      executable.
    - fixed a few minor omissions in the technical overview.


Changes from version 10 to 11
-----------------------------

  Boot loader
  -----------

    - added on the fly patching of the BIOS disk parameter table to
      fix the "Error 0x04" observed on some systems.

  Map installer
  -------------

    - floppy devices are no longer opened at all when using the UNSAFE
      option in OTHER.
    - fixed partition table checking.
    - new option -V to display the version number.
    - INSTALL = /etc/lilo/boot.b  is now the default if INSTALL is
      omitted.
    - new compile-time configuration option NOINSTDEF to restore the old
      semantics of INSTALL.

  Documentation and installation
  ------------------------------

    - QuickInst no longer asks whether to change the active partition if
      installing LILO as the MBR.
    - QuickInst now suggests configuring other operating systems if
      installing LILO as the MBR.
    - added a version check to QuickInst.
    - added de-installation instructions.
    - fixed a few minor documentation bugs.
    - added script mkbindist that generates a minimal binary distribution
      of LILO.


Changes from version 9 to 10
----------------------------

  Boot loader
  -----------

    - added support for read-only setting of root.
    - new chain loader os2.b to load OS/2 from the second disk.
    - new chain loader any_d.b to load BIOS-based operating systems
      (e.g. PC/MS-DOS) from the second disk.