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Re: G5 Debian Lenny Install Difficulties: iMac

On Thu, Feb 19, 2009 at 05:00:04PM +1100, Irena & Richard Jenkins wrote:
>Hi there ...
>At home I have a G5 iMac ... the one with the logic board inside what
>looks like a standard lcd monitor ... with a dvd port on the right hand
>When I try to install debian lenny, I get to the yaboot menu readily
>enough ... and then if I just press the return key ... it starts to
>After about 5 sec the screen turns white ... and starts giving me OF
>messages.  Any attempt to input info from the keyboard fails ... and I
>have to do a cold reboot.
>I tried the video=ofonly alternative ... and the same thing happens.
>Anyone out there got a simple remedy for this issue??
>Many thanks

>PS ... machine is perfectly standard ... and has only Kubuntu on it at
>present.  I replaced the plastic apple keyboard with one of those
>snazzy ones ... made by apple.  Very smart!
>I'd ;like to access the bigger ppc group supporting Debian ... so how
>can I get past the difficulty ... and get 'lenny' installed on my
>Thanks for any help.
>Linux on a Mac... delightful
>Irena & Richard Jenkins
>Canberra,  AU

I installed Debian lenny recently and had a similar problem. It turned
out to be a problem in yaboot.conf in the NewWorld bootblock partition,
/dev/sda2 in my case. I'll report here what I did to get the G5 up and
running with Debian lenny.

After I installed Debian lenny, I used the install CD a second time to
run a shell.

N.b. The problem I had may not be the same you're having now.

1. List your system disk partition table

fdisk -l /dev/sda

        #                    type name                  length   base      ( size )  system
/dev/sda1     Apple_partition_map Apple                     63 @ 1         ( 31.5k)  Partition map
/dev/sda2         Apple_Bootstrap untitled                1954 @ 64        (977.0k)  NewWorld bootblock
/dev/sda3         Apple_UNIX_SVR2 debian             155078126 @ 2018      ( 73.9G)  Linux native
/dev/sda4         Apple_UNIX_SVR2 swap                 1232432 @ 155080144 (601.8M)  Linux swap

Block size=512, Number of Blocks=156312576
DeviceType=0x0, DeviceId=0x0

2. Mount the NewWorld bootblock partition

mount -t hfs /dev/sda2 /mnt

3. Make a save copy of /mnt/yaboot.conf

cp -p /mnt/yaboot.conf /mnt/yaboot.conf.orig

4. This is my yaboot.conf.orig

cat /mnt/yaboot.conf.orig

## yaboot.conf generated by debian-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




5. I manually applied the following changes to yaboot.conf by using
   'nano /mnt/yaboot.conf'

diff -up /mnt/yaboot.conf.orig /mnt/yaboot.conf
--- /mnt/yaboot.conf.orig	2009-02-05 07:20:30.000000000 +1100
+++ /mnt/yaboot.conf	2009-02-04 20:29:44.000000000 +1100
@@ -6,8 +6,9 @@
 ## For a dual-boot menu, add one or more of:
 ## bsd=/dev/hdaX, macos=/dev/hdaY, macosx=/dev/hdaZ

"Sometimes it falls upon a generation to be great. You can be that great
generation." Nelson Mandela

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