Booting iMac from Firewire
by blocktek - 12/9/12 10:00 AM
I'm really frustrated here:
I'm using a mid-2007 20" iMac. I've always backed up using SuperDuper to clone to a Firewire hard drive. I seem to recall that for the first few years, I had no trouble booting from those backups. At the time, only the most recent machines could boot from USB.
I replaced my Seagate backup drive with a Western Digital drive a few years ago. That drive wouldn't boot via Firewire. It would only boot via USB - a limitation confirmed by WD.
Recently, I upgraded that drive to an OWC Mercury Elite. I'm having exactly the same problem. I pulled a Seagate FreeAgent drive out of mothballs and cloned to it, and though it won't boot fully either, it gets to the Apple logo before being rejected.
Am i mis-remembering booting this machine from Firewire? Is this just a limitation of newer drives? Did I just happen to purchase two drives from different manufacturers with hobbled Firewire?