Thank you everyone for your help, especially deanno - sure enough, I downloaded the 64-bit version of Clonezilla, redid the sector-by-sector copy, and although it seemed not to finish completely, it boots correctly and I did partition checks with GParted and everything seems fine. All I had to do was update fstab, menu.lst, and with the new drive S/N and it seems to be OK. Kewl!!