My system, Powerbook G4 circa 2005, does not seem to recognize the Ubuntu 9.10 PPC LiveCD as bootable.
I downloaded and burned the ISO from the Ubuntu PPC site, but the Powerbook will not boot from the CD. Methods for booting I have tried include holding C during boot, holding Cmd+Optn+Ctrl+Del, and holding Option.
When I hold option, it loads the boot menu thing, and my hard disk shows up along with an icon with the Ubuntu disc, but when I select the Ubuntu disc to boot from, the screen flickers and returns to the boot menu.
I have also tried loading Mac OS X and going to the Startup Disk control panel, but the disc does not appear as an option to startup from. (I should mention the disc DOES mount and is accessible via Finder, so it's not like it's unreadable.)
As a "control" for this test, my Leopard disc boots fine and shows up in the all the boot menus.
As for the Linux discs, I have tried the 9.10 live disc, the 9.10 minidisc, and the 9.04 disc all from the PPC website---none of them will work.
What else can I try?