I've recently purchased a 250 GB ATA hard drive for my ibook G4 (1.42 Ghtz) and decided to first test it on a powerbook G4 (12 inch 877 Megahertz). I could not get the thing booted up with an OS disk, nor does it register in firewire disk mode. So I can't perform a migration in any event. I realize that the new drive probably needs to be reformatted to work with an Apple machine, but isn't the OS disk supposed to allow you to format new hardware? Whenever I try to boot up the computer with the OS restore DVD, it freezes and I get lines across the screen. Question: Is this most likely a result of an old powerbook not able to equip a 250 GB hard drive? Or would this problem very likely strike my ibook if I had installed it? Any suggestions would be appreciated.