I recently purchased a used 12 inch powerbook. The guy I bought it from didnt have the original restore disks but gave me a burned dvd that he said was a copy of the original stuff. Anyways, when I try to reinstall OSX and remove all his stuff, it prompts me to restart. When I restart, it just goes straight into OSX...doesnt ask to reinstall. I have tried booting while holding C, no luck. Do you guys have any words of wisdom for me? Thanks.