>Is there a way I can go backwards and find myself booting to the >original 10.3.9 that was on this drive (and worked with the MDD)? Is >it hidden as a previous system and restorable? Unfortunately not. >Or, can I re-install 10.3.9 on the drive without wiping out my data >files, preferences, permissions, etc. that reside there? I would love >to turn back the clock and use this drive and data as my boot drive to >the G4 450 with the original 10.3.9 system... Possible? Provided there is room, you can re-install 10.3.9 (in the OS X Installer, click the Options button and choose "Archive and install") but it will not pick up your old settings and account information. Worth noting that the G4/450 has a lower limit on its internal IDE interfaces; 320 GB is the maximum supported, vs 500 on the MDD. G