I have a friend's iMac which he had Apple replace the hard drive in. The old hard drive worked but was slow and apparently they told him that it was failing. He wants to restore the old system onto the new drive, but I don't have a firewire enclosure to use with the old hard drive, only USB ones. Do I have any options? My thought is that I'm going to have to install the old drive back into the computer, perform a time machine backup, and then swap the drives back to restore from TM. Is there anything else I can do so I don't have to disassemble this iMac twice? It's one of the newer ones that are a huge pain in the ass to pull apart.