[jr32mn5]

I have an original Macbook (2.0 Ghz core duo) and was trying to do a clone of my internal drive to a WD Passport 320 GB 2.5" SATA 2 drive USB 2.0 enclosure.

I physically swapped the drives, and though I can boot from the new one, it won't show up in my Startup Disk preference. When I checked the disk with Disk Utility, the partition map scheme only shows up as Master Boot Record instead of GUID Partition Table.

I know that intel macs need a GPT partition scheme to boot off of, and my original disk was GPT partitioned, so I was quite surprised that Super Duper didn't replicate this. Any help would be appreciated.

I wonder if it is a possible issue with this particular drive case. When I had it open, I could see it uses an Initio USB->SATA bridge chip.

Is there any way to fix the partition scheme after the backup has been done? Do you need more details on the WD enclosure? Unfortunately I closed mine back up, but I could crack it open again to take a look.