I'm using a G-Tech 320GB mini hard drive connected via firewire 400 to my G5 iMac running OS 10.4.11. I used SuperDuper to make what is supposed to be a fully bootable clone on the external drive (following
this tutorial). The volume on the external drive looks okay when accessed via Finder, but I can't seem to boot from it.
I've tried powering up with the Option key depressed, but the only choice that's displayed is the Macintosh HD. I've also tried powering up with the T key depressed, which gave me a firewire icon floating around the screen, but nothing I could apparently do with it.
This backup is mainly in preparation of upgrading to Leopard, so I would really like something to boot from in case things go bad. I don't see that using Target Disk Mode under the Startup Disk mode preferences will help, because that assumes I'm able to boot the machine normally in order to change that setting -- right?
(Note: I've also tried booting from this drive using a G4 PowerBook running Leopard 10.5.4. I get the same results.)
[ September 13, 2008: Message edited by: marc weber ]