my friend had a external hard (250GB) and the SATA plug broke he didn't know this for a while, so there is now corrupt data on the drive (broken partition table and some other stuff)

I've finally backed up the data (>69h copy time) with GNU ddrescue

here's the problem, the best option is to make a copy of the backup and work on that but I don't have the space the other two options are to work on the hard drive, or work on the backup image

the other problem is that I've already tried fixing the partition table (with testdisk) on the drive but I got read errors later on

I'm thinking the best approach would be to erase the hard drive (get a ride of all the errors) and dd on the backup image and work on the drive from there

any ideas?

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