Richard Kettlewell  wrote:
> There is a fault with either the disk, or its connectivity, or its
> power. (Is it powered over the USB connection to the host or is it
> separately powered?)

Power would be my guess, yes. I had this same trouble a lot at some point,
almost making me ditch the whole ecosystem. This was with a 2.5" hdd. The
adapter seemed good, 5.1 V and 2.5 A tested. Maybe it didn't handle peaks
well. Annoyingly in a way, problems went away completely when I switched to
the official adapter which has the same specs.

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