Installing Debian Lenny on MacMini G4

[Mathieu Malaterre <mathieu.malaterre@gmail.com>]

Hi there,

  I am trying to install Debian 5.0.5 on a used MacMini G4.
  I have followed instructions from:
http://sowerbutts.com/linux-mac-mini/

  However I could not get the MacMini to boot onto the debian installer.
  I tried the:
- 'C' holding approach (does not work at all)
- 'Options' holding approach (Only the hard drive icon shows up)
- 'Option'+'Command'+'o+'f' opens a terminal:

Apple PowerMac10, 1 4.8.9f4 BootROM build on 03/23/05 at 14:22:23
...
0 > boot cd:,\\tbxi DISK-LABEL: read block0 failed
ATAPI-DISK: open of DISK-LABEL failed can't open: cd:,\\tbxi
Can't open device or file
0 > eject cd: ok
0 > boot cd:,\\tbxi DISK-LABEL: read block0 failed
ATAPI-DISK: open of DISK-LABEL failed can't open: cd:,\\tbxi
Can't open device or file

I tried the 'eject' approach as mentioned in the bugzilla bug number 162046...

I have one cdrom burned from my debian/amd64 laptop and one cdrom
burned from the MacMini, both fails as shown above. Both cdrom opens
fine on my debian/amd64 laptop.

References:
http://sowerbutts.com/linux-mac-mini/
http://mac.linux.be/content/booting-open-firmware
https://bugzilla.redhat.com/show_bug.cgi?id=162046
http://www.powerlinux.com/mini/
http://cdimage.debian.org/debian-cd/5.0.5/powerpc/iso-cd/debian-505-powerpc-netinst.iso

I would really appreciate *any* help !

Thanks in advance,
-- 
Mathieu