Ouch. Hard drive errors. The standard way is to use ddrescue to (try to) extract the data, and then work on a copy of that data.
The program 'testdisk' can detect permissions and rebuild MBRs.
Best of luck with that, but you may well have fried the controller. If so, the only option is a 'brain swap' (replace the controller board with one from an identical drive).
It all depends on how valuable the data on the drive is.
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