USB is a notoriously bad tempered interface, especially when it's a ten-dollar hard drive converter. I've had a lot of refuse-to-work instances that are solved by switching to another converter. But connecting it directly to the computer is the best way to show that the drive is still good.

I have copied smaller drives using dd and writing the results to an interim file. I also did it in pieces, since dd is silent during the process and I wanted to track its progress. Because dd lets you copy a selected section, this works, and also the following trick:

If you take a spare disk and use dd to copy just a few blocks to it, you get a target disk with the MBR, partition table, and part of the first partition. You can then take that disk and look at it with fdisk and you will see all the primary partitions, with the first one described properly, and the rest seemingly corrupted (because it isn't all copied yet). Since it can take hours to copy modern disks, this trick can save a lot of time if you want to test your methods and setup.

Barry
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