changes

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

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

    - removed support for old-style configuration.
    - removed the dump option -D
    - removed support for not-compound unstripped kernels.
    - limited partition checking to hard disks and primary partitions.
    - -C now accepts - for standard input.
    - -P now has sub-options "fix" and "ignore". New configuration
      variable "ignore-table" coresponds to "-P ignore"
    - added automatic backup of the partition table when fixing it.
    - new configuration variables "readonly" and "read-write" to change
      read-only mounting of root.
    - made partition offset field in /etc/lilo/disktab optional.
    - added tentative support for XT-type hard disks.
    - improved some error messages.
    - some minor fixes.

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

    - changed many "echo"s in QuickInst to "cat"s.
    - suggesting using a symbolic link to lilo for /etc/lilo/install.
    - removed the configuration option NOAUTO.
    - split the documentation in a user's guide and the technical
      overview.
    - removed all references to older versions of LILO, the kernel or
      other programs.
    - removed all references to old-style configuration and not-compound
      unstripped kernels.
    - using the fullpage style.
    - removed and "ascified" anew the shared sections of README and the
      LaTeX documentation.
    - some minor corrections.


Changes from version 8 to 9
---------------------------

  Boot sector
  -----------

    - can now get the command line from the map file and overwrite
      that sector.
    - passes the word "auto" on the command line if booting after a
      timeout.
    - new command-line option vga={ask,normal,ext,extended,<number>}
      to alter the VGA mode on the fly.
    - image name matching can now be made case-insensitive (default)
    - added sanity checks for the second stage loader and the
      descriptor tables.

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

    - added new compound unstripped kernel format.
    - -r is now implied if the environment variable ROOT is set.
    - new option -I to translate a label name (e.g. obtained from
      BOOT_IMAGE) to the path of the kernel image.
    - new variable MESSAGE to define a startup message.
    - new variable UNSAFE to bypass sanity checks and floppy spin-up
      when defining other operating systems.
    - new variable ALIAS to define a second label name.
    - new variable RESTRICTED to confine password protection to
      invocations with parameters.
    - added a missing #include <sys/stat.h> to map.c
    - fixed the BIOS_MAX_* parameters in lilo.h
    - removed too restrictive cylinder number check.
    - new option -R to set/clear the default command line in the
      map file.
    - added verification of 3D and linear address equality of
      partition starts (in the partition table).
    - suppressed outputting the version string when using -D with -v
    - "vga=extended" can now be abbreviated to "vga=ext".

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

    - added a test for broken regexp in sed, grep and egrep to
      QuickInst. Other minor improvements.
    - now uses build-time configuration variables in Makefile or
      /etc/lilo/config.defines
    - copied section "LILO start messages" from doc.tex to README
    - removed the description of a floppy test installation from
      README. (doc.tex never contained that part.)
    - fixed some minor documentation errors and omissions.
    - fixed some minor Makefile bugs.
    - included the LaTeX translations of the FIG files.
    - moved the "Technical overview" to the end.


Changes from version 7 to 8
---------------------------

  Boot sector
  -----------

    - now supports password protection for boot images.
    - fixed occasional omission of delays.
    - passes the name of the boot image to the kernel, which stores
      it in the environment variable BOOT_IMAGE.
    - parameters are now preserved when trying to boot the same
      image again after a media error.
    - the command line is preserved on error.
    - can be operated from a serial line.
    - made timeout handling interrupt-driven to fix time-wrap problems
      at midnight.
    - now clears all bytes after text and data of traditional boot
      images booted from a file.

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

    - added detection of missing HDIO_REQ support.
    - added sanity checking for disk parameters.
    - fixed BIOS code computation for SCSI disks.
    - command-line settings can now override /etc/lilo/config
    - defaults for ROOT, VGA, RAMDISK, PASSWORD and OPTIONAL can be set
      in the options section.
    - new option PROMPT to unconditionally enter the boot prompt.
    - new option TIMEOUT to specify an input timeout.
    - new flag OPTIONAL to specify that an image can be omitted if it
      isn't present.
    - new value CURRENT for ROOT to specify the "current" root device.
    - special characters are now correctly escaped in dumps.
    - temporary files are now removed on error.
    - updated the usage output to reflect the changes since 0.6.
    - added a missing closedir to device.c

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

    - wrote a quick installation script.
    - fixed many small documentation errors.
    - wrote a README for the doc directory.
    - added descriptions of the configuration parameters passed in
      the boot sector and of the kernel's command-line interface.
    - Makefile now explicitly uses /bin/sh
    - changed echo \c to echo -n in the Makefile
    - added ability to print the name of the active partition to
      activate.


Changes from version 6 to 7
---------------------------

  Boot sector
  -----------

    - supports video mode and RAM disk size settings.
    - loads original boot sector to make possible additional settings
      available.
    - now uses defaults from the boot sector even if the boot sector
      has been changed after map creation.

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

    - new configuration based on /etc/lilo/config
    - can get SCSI geometry without using /etc/lilo/disktab (doesn't
      work with 0.98pl6)
    - removed support for BIOS codes (name:code)
    - removed support for setting the swap device.
    - new command-line options: -q, -C and -D

  Documentation
  -------------

    - updated to cover new-style configuration
    - extended the plain-ASCII README


Changes from version 5 to 6
---------------------------

  Boot sector
  -----------

    - added command-line argument passing.
    - now clears BSS of traditional images too.
    - chain.b is now more careful about register values when invoking
      the boot sector of the other OS.
    - added an interface for externally provided command lines.
    - added experimental recognition of linear addresses.

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

    - fixed opening the disktab file. (Using -f didn't work.)
    - fixed use of BIOS codes for the map file: the tilde is now appended
      before the BIOS code.
    - added a chdir("/") when using -r
    - added more sanity checks.
    - added generation of linear addresses.

  Documentation
  -------------

    - removed all references to swap device settings in the kernel because
      recent kernels don't support that any longer.
    - added a troubleshooting section.
    - several minor fixes and improvements.


Changes from version 4 to 5
---------------------------

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

    - added automatic boot sector backup.
    - fixed variable block size detection. (Didn't work with the 0.97-pl2
      kernel.)
    - added the chroot (-r) option.
    - made the partition table part of a foreign OS boot descriptor
      optional.

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

    - most of README has moved into doc.tex (LaTeX)
    - added a utility to activate a partition.
    - make install  now reminds the user to update the map.
    - dd is now used in a more efficient way in the Makefile.
      (Fewer subshells, etc.)


Changes from version 3 to 4
---------------------------

  Boot sector
  -----------

    - added a configurable delay.
    - added a diagnostic title message.

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

    - fixed all known include file conflicts.
    - added support for variable block sizes. (Not used yet.)
    - added some more sanity checks.
    - added a tool to determine SCSI disk parameters.

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

    - extended coverage of SCSI disks.
    - make install  now backs up chain.b and boot.b of any older LILO
      installation. (To say: your system remains bootable even if you
      forget to run /etc/lilo/install after the update or if this fails
      for some reason.)
    - moved the changes section from README into CHANGES.
    - a set of pre-compiled executables of lilo, boot.b, chain.b and
      dparam.com is available too.


Changes from version 2 to 3
---------------------------

  Boot sector
  -----------

    - can initialize BSS of unstripped kernels.
    - also accepts [Tab] to show the list of known images.

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

    - fixed parsing of the root device specification.
    - fixed setting of the root device when the boot image doesn't
      define it.
    - reduced the number of installable images from 19 to 16. (Because the
      descriptors have grown.)

  Documentation
  -------------

    - added a booting basics section.
    - many minor changes.


Changes from version 1 to 2
---------------------------

  Boot sector
  -----------

    - added command-line editing.
    - added debugging support (-DDEBUG).
    - added support for compacted maps.
    - some cosmetic changes.

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

    - major rewrite.
    - files that contain "holes" are now handled properly.
    - added map compaction.
    - devices are now created on the fly only if they can't be found in /dev.
    - improved sanity checking.
    - can now boot other operating systems.
    - can now boot unstripped kernel executables.
    - added support for a disk parameter file.
    - reduced the number of installable images from 21 to 19.
    - changed the command-line syntax.
    - root and boot can now be specified on the command line.

  Documentation
  -------------

    - many changes, including correction of some minor errors.


Changes from version 0 to 1
---------------------------

  Boot sector
  -----------

    - tested as master boot record.
    - improved the boot prompt invocation method.
    - increased the number of installable images to 21.
    - added a help facility.
    - improved read error handling and error reporting in the boot loader.
    - added a second stage boot loader.

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

    - fixed some minor bugs in the map installer. Removed all compiler
      warnings.
    - added labeling of images.
    - added version checking for the boot sector.
    - replaced option -r by -m. -r will be available for a while for
      compatibility.
    - added booting from device files (that have boot images written on them).
    - BIOS device codes can now be specified for boot image files too.
    - added concatenation of images. (This is a test feature that will be
      changed in the future.)

  Documentation
  -------------

    - some minor documentation errors have been corrected.
    - the README now warns that the map has to be rebuilt after the images are
      replaced or moved.
    - added a files, a hints and an examples section.