/proc/self/jd

1. reboot into OSX install CD
2. Hit Installer->Open Disk Utility on menu bar
3. Split the space on the hard drive, lock the second partition, set the type on the first partition to "free space", and Rename the second partition "Macintosh HD". When you're happy, hit the "Partition" button.
4. Go back to the installer and continue installing OSX. Might as well hit "customize" on the installation type screen and add X11.
5. Wait.....forever....and.....ever....
6. Reboot, reregister.
7. Eject the OSX install CD and insert the Debian install CD.
8. Shut down the computer then power it back on while holding down the 'c' key. If your keyboard is connected via a KVM, you'll probably need to unplug it and connect directly.
9. Hit return at the boot prompt to start the installation.
10. The Debian installer is straightforward. When you get to the partitioning stage choose the option for "guided partitioning" using the largest block of free space. You need a properly constructed boot partition for yaboot to work correctly and Debian knows how to set it up for you.
11. All done, another reboot. Load up OSX once to make certain nothing went wrong there then reboot back into Linux and finish the install.
12. Timezone, root password, user password, manual package selection, "q" once aptitude starts, done.
13. Log in as root. If you want to run Unstable rather than Testing, change /etc/apt/sources.list now. "apt-get update ; apt-get -u dist-upgrade" to pull down the latest updates.
14. "apt-get -u install kernel-image-2.6-powerpc kernel-headers-2.6-powerpc" to install the latest kernel.
15. Reboot into Linux again.
16. "apt-get -u install gnome-core x-window-system synaptic gdm".. Let's get a clean deaktop up.
17. Select "ati" as the video driver and leave the bus identifier blank. Say no to the kernel framebuffer.
18. Reboot or "/etc/init.d/gdm start" to bring up X.

Everything but sound works at this point. The snd-powermac module gets loaded without any problems, but /dev/mixer and /dev/dsp are not working. Glxinfo shows that direct rendering in enabled. Glxgears shows around 632 fps. OpenGL performance looks reasonable.

The lack of sound sucks, but others have reported the same problem. Hopefully this will be fixed soon.