I have a G4 1GHz AGP and new external USB 2.0 external drive. I have a Belkin USB 2.0 card installed in the G4 so USB 2.0 is not an issue. I realized a G4 Power PC cannot be started from an external drive. My question is the best way to use the external drive for backups. Should I use SuperDupper to clone the primary to the backup or should I make an image of the primary drive and save the image to the external drive? If I SD clone the primary to the external backup drive then remove the cloned drive and install the inside the G4 should it then boot?