yabootconfig - generates a simple /etc/yaboot.conf
yabootconfig
[ -t|--chroot directory\]
[ -b|--boot device ]
[ -r|--root device ]
[ --kernel-args "kernel_args"\]
[ -q|--quiet ]
[ --noinstall ] [ --debug ]
[ -h|--help ]
[ -V|--version ]
This manual page explains yabootconfig the configurator for the
yaboot(8) boot loader enabling GNU/Linux to be booted by OpenFirmware.
Specifically it inspects the running system, generates a working
/etc/yaboot.conf(5) and then runs mkofboot(8) to make the system
bootable.
yabootconfig requires an 800K bootstrap partition on the
same disk as the root partition. It must be type
“Apple_Bootstrap” for PowerMacs, and type “0x41 PPC
PReP Boot” for IBM CHRP hardware.
The bootstrap(8) must not be mounted anywhere on your
filesystem, especially not on top of /boot. Yaboot is able to load
the kernels from the ext2fs root partition so that is where they should be
kept. mkofboot will refuse to operate on the bootstrap(8)
partition if it is mounted.
yabootconfig requires ofpath(8) in order to get the
OpenFirmware device name for the root disk on PowerMacs.
- -t, --chroot directory
- Cause yabootconfig to work as if directory is the /
directory. This is useful when booting from a rescue floppy or CDROM in
which case you mount your true root filesystem on /target or /mnt.
yabootconfig will generate <chroot>/etc/yaboot.conf
and pass the “-C <chroot>/etc/yaboot.conf” arguments
to mkofboot(8). Example: yabootconfig --chroot /target
- -r, --root device
- Normally yabootconfig will automatically determine the root
partition by inspecting <chroot>/etc/fstab(5). This option
forces it to use device instead of auto-detecting it. This option
is only intended to be used by distribution installers which should
already know with absolute certainty what the root partition device
is.
- -b, --boot device
- Normally yabootconfig will automatically find your bootstrap
partition, this option forces it to use device instead of
auto-detecting it. This option is only intended to be used by distribution
installers which should already know with absolute certainty what the
bootstrap partition device is. The bootstrap partition is
where mkofboot(8) will install the bootloader onto, this device
should be that of your bootstrap(8) partition. For example, if your
bootstrap partition is located on your first primary IDE drive in
the second partition, your device would be: /dev/hda2. IMPORTANT:
The bootstrap partition WILL BE ERASED when yabootconfig
runs mkofboot(8).
- --kernel-args
- This option allows you to specify additional kernel arguments which will
be placed in an append= configuration variable in
/etc/yaboot.conf(5). You must quote the arguments you supply to
this option. Example: --kernel-args "video=ofonly"
- -q, --quiet
- Normally yabootconfig will ask permission and explain what it is
about to do before proceeding, this option prevents yabootconfig
from asking any questions or displaying any informational messages except
errors. This option also prevents yabootconfig from interactively
asking the user to locate a kernel image if it fails to find one in the
standard locations. This option is only intended to be used by
distribution installers which may run yabootconfig in the
background in order to make the disk bootable after OS installation.
- --noinstall
- Normally yabootconfig will automatically run mkofboot(8)
after it successfully generates a valid
<chroot>/etc/yaboot.conf. This option causes
yabootconfig to only generate the config file without installing
the bootstrap.
- --debug
- This option causes yabootconfig to output some boring details
useful only for debugging yabootconfig itself.
- -h, --help
- Print out usage information and exit.
- -V, --version
- Print out the version number and exit.
/etc/fstab - static information about the filesystems
/etc/yaboot.conf - bootloader/ybin configuration file
yabootconfig and this man page was written by Ethan Benson.
yaboot was written by Benjamin Herrenschmidt.
Report bugs to <erbenson@alaska.net>
bootstrap(8), fstab(5), mkofboot(8), ofpath(8),
yaboot(8), yaboot.conf(5),