The "old" iMac G5 still works just fine except that the Firewire ports don't work. I'm passing it on to my wife who doesn't need or want all the bells and whistles. So I'm not planning to remove the old drive. I do have an external drive (USB 2) that I can write to. But it's USB not firewire. I do have a Firewire only enclosure that I could move the HD to. I.e. write on the HD with USB, move the HD to the FW enclosure, then connect the migration assistant to the FW drive enclosure. That what you had in mind? I could see this work except: The question I'd have is exactly what do I write over to the external HD (besides the USER folders) ? Which system files should be included.? Aren't the system files for the MacTel version of OS X different that the files used by the G5 machines.? John > John; > Barrow or buy a firewire enclosure, and use that to do the > migration assistant [ or if the new Mac supports multiple drives, > just install the old drive in the new Mac and migrate from there ]. > > Russell > > On Jan 19, 2007, at 12:37 PM, John Erdman wrote: >