Unable to restore; can't select destination disk

I'm replacing a Seagate 100G drive with a WD 500G drive, in a Lenovo PC. It's GPT/UEFI.

I did a full disk backup to an external WD 2TB USB disk, which took about 5 hours for unknown reasons.

When I attempt to restore the entire disk, I am unable to select the WD 500G drive as the destination.

I can however restore individual partitions, except when I reached the 4th partition that's actually Windows, it again won't let me choose the the WD 500G as the destination.

I also tried to back up the drive on my normal PC using a E-SATA dock, and it took about 45 minutes, but when I tried to restore it to the new drive, it reaches a certain point and just stops. I think at one point it said it wanted to reboot my PC, but that vanished before I could tell it yes or no. So I decided to just do it on the actual Lenovo PC.

This isn't the first time I've had this problem but I can't remember what the solution is, if there is one. My next attempt will be to plug the E-SATA dock (via usb) into the Lenovo, and see if I can clone the drive.

I've attached a display of the drive's partitions, if that's any help.