Not sure which category this should be posted in... I have an Intel mac mini. I am using an external Firewire drive that has two partitions on it. Previously I had 10.4 (PPC) installed on one of the partitions using my old G4. Now I'd like to do a clean install of OS X (intel) for a backup on the drive. When I start up from the Install disc it shows me the drive, but it says it can't install onto it because it's not a bootable disc. But I can boot up from the OS X (PPC) install that is currently on it. Is this a software issue, or do I need to change the way the jumpers are set on the external drive? The drive is a: Western Digital Caviar RE WD3200SB 320GB 7200 RPM 8MB Cache IDE Ultra ATA100 Hard Drive Thanks!