[Carl Fink]

Thank you for your quick reply, your answer solved the problem.

I thought "Apple Partition Map" was selected when setting up the drive. After your note I double checked and it had been changed to "Master Boot Record". After repartitioning the the drive and backing up, everything is working fine.

Thanks again for your quick reply and for a wonderful product!

Carl Fink

P.S. For what it's worth, I learned about SuperDuper! through Andy Ihnatko on the podcast MacBreak weekly.