Bill Bogstad wrote on 2025-10-14 15:34:

There is a "try really hard" copy command.   It will copy a file in
large chunks until it gets an error and then use seeks and smaller
block size reads to recover as much of the file as possible.  It will
also retry the bad single block reads multiple times in case it is a
temporary problem.  (More likely to work for magnetic media.)

That sounds like `ddrescue` if anyone's interested.

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