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audiorevolution 05-23-2005 12:17 AM
Configuring boot to recognize other Linux partitions
 
I have Debian/sarge and Ubuntu 5.04 installed onto my harddrive (if you're asking why I'm running two Debian distros, it's because I am having massive difficulty configuring XF86 with my video card, so I need to be able to boot into another OS). My boot loader, Yaboot (PPC), is only configured to load Ubuntu, though, and doesn't give me the option for booting Debian.

This is my hda layout:
Code:
/dev/hda
        #                    type name                length  base    ( size )  system
/dev/hda1    Apple_partition_map Apple                    63 @ 1        ( 31.5k)  Partition map
/dev/hda2        Apple_Bootstrap boot                  1954 @ 64      (977.0k)  NewWorld bootblock
/dev/hda3        Apple_UNIX_SVR2 debian            36718750 @ 2018    ( 17.5G)  Linux native
/dev/hda4        Apple_UNIX_SVR2 swap                2450758 @ 56154362 (  1.2G)  Linux swap
/dev/hda5        Apple_Bootstrap untitled              1954 @ 36720768 (977.0k)  NewWorld bootblock
/dev/hda6        Apple_UNIX_SVR2 ubuntu            18564454 @ 36722722 (  8.9G)  Linux native
/dev/hda7        Apple_UNIX_SVR2 swap                867186 @ 55287176 (423.4M)  Linux swap
The Yaboot config file (/etc/yaboot.conf) is as such:

Code:
## yaboot.conf generated by the Ubuntu installer
##
## run: "man yaboot.conf" for details. Do not make changes until you have!!
## see also: /usr/share/doc/yaboot/examples for example configurations.
##
## For a dual-boot menu, add one or more of:
## bsd=/dev/hdaX, macos=/dev/hdaY, macosx=/dev/hdaZ

boot=/dev/hda5
device=/pci@f2000000/mac-io@17/ata-4@1f000/disk@0:
partition=6
root=/dev/hda6
timeout=100
install=/usr/lib/yaboot/yaboot
magicboot=/usr/lib/yaboot/ofboot
enablecdboot
Debian=/dev/hda3

image=/boot/vmlinux
        label=Linux
        read-only
        initrd=/boot/initrd.img
        append="quiet splash"

image=/boot/vmlinux.old
        label=old
        read-only
        initrd=/boot/initrd.img.old
        append="quiet splash"

# This entry automatically added by the Ubuntu installer for an existing
# Linux installation on /dev/hda3.
image=/pci@f2000000/mac-io@17/ata-4@1f000/disk@0:3,/boot/vmlinux
    label=hda3-Linux
    root=/pci@f2000000/mac-io@17/ata-4@1f000/disk@0:3
    append="root=/dev/hda3 ro"
    initrd=/pci@f2000000/mac-io@17/ata-4@1f000/disk@0:3,/boot/initrd.img
~
I might have found a solution to my XF86 problem, so I'm anxious to boot back into Debian, so any help is very appreciated.

Ynot Irucrem 05-23-2005 05:18 AM
first off, why are you using two swap partitions? two distros can use the same swap. just go into your /etc/fstab for the distro that is using the /dev/hda7 swap and change the entry that looks something like
Code:
/dev/hda7      none            swap    sw              0      0
to refer to /dev/hda4 (I'm assuming you want to use the bigger swap partition), then you can use that other swap space for something else.

secondly, it looks like the ubuntu installer has already set up an entry for debian in the boot loader.
Quote:
# This entry automatically added by the Ubuntu installer for an existing
# Linux installation on /dev/hda3.
maybe the boot loader is like the one in fedora, which just boots the default OS unless you press a key within 3 seconds, at which point it comes up with the boot menu.
I'm not familiar with yaboot, but "man yaboot" should turn up how you can turn this functionality off, if indeed this is whats happening.

if this isn't whats happening, what *exactly* happens when you boot?

also, this might help you: http://penguinppc.org/bootloaders/ya...t-howto.shtml/


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