BootFromFirewireHardDisk

Revision 2 as of 2005-11-28 07:39:07

Clear message

These don't entirely work.

These instructions won't work, as the Ubuntu kernel does not have the necessary bits compiled in -- SCSI, fw support, and sbp-2. See http://macubuntu.blogspot.com/ for step-by-step instructions on how to get this to work.

Original post

This page needs a bit of love, imported from bugzilla #1181

Here you have a link to a howto to boot from a harddisk.

I'm not sure if the link will be valid too much time so here you have the important bits:

3. i. Next is to locate the firmware path of the FireWire drive:

# find /proc/device-tree/ -name disk@\* | grep -i firewire

/proc/device-tree/pci@f4y000000/FireWire@e/node@0001d200e00260c6/sbp-2@c000/disk@0

3. j. Next it is time to create the yaboot.conf file on the FireWire drive. The config file shown below was based on the FireWire address above.

# pico /mnt/fw/boot/yaboot.conf

  • ofboot=fw/node/sbp-2/disk@0:

    init-message=”Welcome top Yellow Dog Linux! \n Hit <TAB> for boot options.

\n\n”

  • partition=4 timeout=30 install=/usr/lib/yaboot/yaboot magicboot=/usr/lib/yaboot/ofboot default=linux image=/boot/vmlinux-2.4.20-8dsmp label=linux root=/dev/sda4 read-only initrd=/boot/initrd-2.4.20-8dsmp.gz defaultos=linux delay=10 enablecdboot

I believe the partition=4 line can go in the image= section which is where it belongs. If one has several boot images then a different partition might be needed. However, it was done this way for simplicity. Since this example only uses one FireWire drive with one install of YDL it is not necessary to move the line. The ofboot line should be the firmware path to the FirwWire drive.

3. k. Now we must “bless” the drive so that it can be seen by the Apple boot loader.

# ybin -v --boot /dev/sda2 --nonvram --config /mnt/fw/boot/yaboot.conf

3. l. You should now be ready to boot the FireWire drive using the Mac boot loader. In order to get to the Mac boot leader you must restart the machine:

# shutdown –r now

And hold down the keys:

ALT + APPLE KEY + O + F

3. m. You should see a boot prompt and at this prompt type:

> boot fw/node/sbp-2/disk@0:2, yaboot

Note that the disk@0:2 is from the FireWire address and 2 is the bootstrap partition. This will change if you put the bootstrap on another partition number.

3. n. Now you should see the yaboot boot loader from the FireWire drive; you can just hit enter here and it will take you into YDL.

4: Firmware paths

To find the firmware path of your FireWire disk, type the command: ( find /proc/device-tree - name disk@\* | grep firewire ) Removing the /proc/device-tree gives the OpenFirmware path of the disk. Firmware aliases found in /proc/device-tree/aliases or lack of multiple firewire disks will allow a simplification of the path, as illustrated in our example.