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