Gentoo Archives: gentoo-ppc-user

From: Enlightened User <linux@×××××.com>
To: gentoo-ppc-user@l.g.o
Subject: Re: [gentoo-ppc-user] Re: New install - Unable to get my ppc Mac Mini to boot the root partition
Date: Fri, 03 Sep 2010 21:43:11
Message-Id: 00473462-10E0-4574-B2E2-EFD84A3D41B2@nc.rr.com
In Reply to: Re: [gentoo-ppc-user] Re: New install - Unable to get my ppc Mac Mini to boot the root partition by Mark Knecht
1 http://www.debian.org/ports/powerpc/inst/yaboot-howto/ch9.en.html
2
3 Sections 9.2 and 9.3 show how to boot to the yaboot 'boot:' prompt and
4 start the kernel with parameters.
5 Hope that helps you get started.
6 If you do change the yaboot.conf file don't forget to run ybin to
7 update the boot partition. I would suggest increasing delay and
8 timeout values (section 6.6 of the previous web document) so the
9 default image is not automatically loaded so quickly. You should then
10 be able to enter something like:
11 hd:4,/vmlinux root=/dev/sda4 ro
12 at the boot: prompt.
13
14 Another thought would be to remove SCSI support from your kernel
15 build, unless you have a mac mini with an SCSI interface, you should
16 not need SCSI support. That should not require any changes to the
17 yaboot configuration you are currently using.
18
19 Barry
20
21 On Sep 3, 2010, at 9:38 AM, Mark Knecht wrote:
22
23 > On Thu, Sep 2, 2010 at 4:31 PM, Enlightened User <linux@×××××.com>
24 > wrote:
25 >> Could the root device now be referred to as /dev/sda4 (SCSI Disk
26 >> support)
27 >> with the kernel now loading?
28 >> You should be able to pass the root device to the kernel at boot time
29 >> (root=/dev/sda4).
30 >> If you are able to get past the root filesystem check (the disk is
31 >> referred
32 >> to as sda instead of hda), then you will need to update your /etc/
33 >> fstab to
34 >> reflect the different device names.
35 >>
36 >> Barry
37 >>
38 >
39 > Hi Barry,
40 > Interesting idea. I hadn't considered that possibility as the early
41 > part of the boot, where I have the printk times for each step, clearly
42 > shows it as hda. However then in the init stages the system starts
43 > udev. Maybe that changes the name.
44 >
45 > With yaboot is there a way to edit the command line at boot time
46 > like there is with grub? I'm having a hard time because the Mac Mini
47 > seems to be dimming my monitor and I cannot read what's happening
48 > right before boot!
49 >
50 > I suppose I can edit the yaboot config file if necessary.
51 >
52 > Thanks,
53 > Mark
54 >

Replies

Subject Author
[gentoo-ppc-user] Unsubscribe!!! Dr John Krane <jkrane@×××××××.net>
Re: [gentoo-ppc-user] Re: New install - Unable to get my ppc Mac Mini to boot the root partition Mark Knecht <markknecht@×××××.com>