I'm not sure if this is a hardware or software question, so please excuse me if I put it in the wrong section. I would like to know how I can back up my iMac's harddrive, completely, so that the backup would be an exact copy, even usable as a start-up drive if something were to happen to my main drive. Can this be done with an iOmega peripheral drive? My iMac G4 has an 80 GB harddrive, and my iMac G3 has a 60 GB. I'd like to back them up "hook, line, and sinker", so to speak. Can this be done? Can they also be used as start-up drives? Thanks!