Hi All, I recently purchased a new Macbook pro i7 and gave my old leopard Macbook pro to my boyfriend. He had an old Powerbook G4 and was in the process of transferring over data to his "New" Macbook Pro 2.16 Intel Core Duo. I told him how to start the Powerbook G4 as a target drive attached via firewire to the Macbook Pro. He was able to do so and transfer and copy the data he needed (mostly transferring of iTunes data i.e Applications, Settings, and Music). He ejected the disk properly and shut down. Tonight, he tried to boot up the G4 and it would start up (to a white screen only and nothing else) and then shut down immediately. No apple logo no nothing, just a white screen. Since he could not boot the computer, he once again attached the G4 to the Macbook Pro via firewire as a target drive. When it booted as a Target drive, a message came up saying something like "This drive is damaged and can not be repaired by this computer. You should back it up" When he looked into the drive he noticed his iTunes files were no longer on the G4 drive. All of his other documents he transferred were still on the computer however he could not add any files from the Macbook to the G4 target drive. When he tried to add files onto the G4 target drive, a message along these lines popped up "Documents (or whatever folder) cannot be modified." I believe the reason this happens is because you cannot add any files to a target drive, right? Any ideas to why the computer will not boot and shuts down after a white screen? Also, any ideas on the message "This drive is damaged and can not be repaired by this computer. You should back it up" ?? Some type of compatibility issues because the G4 is old ?? Thank you for your time and help on this one.