I recently bought an ibook: g3, 600mhz, 640mb, 15gig hd, airport card... The book came with ibook disks of os 10.1.2 and os 9.2.1. I have a g4 cube I bought second hand so I don't have any install disks for it. I want to put a new hard drive into the cube. Does anyone know if I can install os 9.2.1 onto the ibook and install os 10.1.2 onto the cube. Both os disks came with the ibook. I don't want the copyright police to knock down my door. Thanks for any help.