I have a 3TB drive with three partitions that has lived in a slowly dying enclosure. I pulled it out carefully and have tried it with USB 2.0 and USB 3.0, but always get an error that the disk is unreadable. I thought I zapped it, but put it back in the old enclosure and everything works a-ok. I tested the USB cables and they’re fine.
I read a comment on Amazon that this happened for another person as well… he said his disk needed to be reformatted within the dock, then it worked like a charm. Anything I can do short of this solution to save me from having to backup the data from the (slowly dying!) older enclosure to another drive?