http://www.debian.org/ports/powerpc/inst/yaboot-howto/ch9.en.html
Sections 9.2 and 9.3 show how to boot to the yaboot 'boot:' prompt and
start the kernel with parameters.
Hope that helps you get started.
If you do change the yaboot.conf file don't forget to run ybin to
update the boot partition. I would suggest increasing delay and
timeout values (section 6.6 of the previous web document) so the
default image is not automatically loaded so quickly. You should then
be able to enter something like:
hd:4,/vmlinux root=/dev/sda4 ro
at the boot: prompt.
Another thought would be to remove SCSI support from your kernel
build, unless you have a mac mini with an SCSI interface, you should
not need SCSI support. That should not require any changes to the
yaboot configuration you are currently using.
Barry
On Sep 3, 2010, at 9:38 AM, Mark Knecht wrote:
On Thu, Sep 2, 2010 at 4:31 PM, Enlightened User <[email protected]>
wrote:
Could the root device now be referred to as /dev/sda4 (SCSI Disk
support)
with the kernel now loading?
You should be able to pass the root device to the kernel at boot time
(root=/dev/sda4).
If you are able to get past the root filesystem check (the disk is
referred
to as sda instead of hda), then you will need to update your /etc/
fstab to
reflect the different device names.
Barry
Hi Barry,
Interesting idea. I hadn't considered that possibility as the early
part of the boot, where I have the printk times for each step, clearly
shows it as hda. However then in the init stages the system starts
udev. Maybe that changes the name.
With yaboot is there a way to edit the command line at boot time
like there is with grub? I'm having a hard time because the Mac Mini
seems to be dimming my monitor and I cannot read what's happening
right before boot!
I suppose I can edit the yaboot config file if necessary.
Thanks,
Mark
