Hello. For privacy reason, before sending in the computer for repairing, is it better to reinstall Mac OS? Before doing that, is cloning the drive using SuperDuper good enough to restore the computer to its state (before sending to Apple) after the repairing? Some accounts have the password saved by the OS. I guess if I reinstall Mac OS, those info will be erased. If I do not reinstall the OS, what can I do to have all those auto saved passwords removed? What other things should be done before sending in the computer for repairing Thanks.