So recently, I got my hands on a Powerbook g4 (for free of course, or I wouldn't go through all this trouble.) But, it doesn't have an OS... Now I'm pretty computer savvy, I've built my share of PCs. But I'm stumped. I would like to install some form of OS X, but Linux or Ubuntu would be nice as well. I also need to install it from a flash drive. Could someone give me a link to a bootable ISO and/or instructions on how to boot from aforementioned flash drive? Any help would be appreciated.