Recently my hard drive on my ibook g4 crashed beyond repair by DiskWarrior or Disk Utility. I don't want to buy a new hard drive and replace it, i've heard its a pain, and you can buy this laptop used on ebay for dirt cheap. But low and behold, i want to try running ubuntu on it, without using the HD. I have run a live cd of ubuntu 10.04 PPC, which is the correct version for an iBook i believe, i tried to install the OS onto a 4gb flash drive. It installed succesfully, but the problem is, i can't boot the USB 2.0 drive on the startup. I am running out of ideas how to do this without using the internal HD, i just want to use the laptop for taking notes in class. and i don't require to much space. Does anyone out there have any ideas on how i can do this? any help would be muchly appreciated. I had an idea of maybe installing ubuntu 10.04 onto a DL 8.5gb dvd, but i'm not sure if that would work. I'm pretty new to macs, so i don't really know what i'm doing. But any help would be great, thanks.