A friend has a gray PowerMac G4 with 2x500MHz G4s and an ATI Rage 128 Ultra graphics card. His IBM Deskstar 40GB hard drive crashed as he was preparing to upgrade from OS9 to Panther. Will a standard ATA/IDE hard drive work with his Mac? Specifically, I was going to recommend a 80GB Seagate ATA100 7200RPM/8MB cache available at Best Buy for $49.99. Based on what I found at Apple's website I am not sure whether he has SCSI or ATA. My friend doesn't know either and he can't boot his Mac to check the system profiler. Thanks.