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How do I recover data from an external hard disk? I used the dd command by mistake on the disk. Specifically, I used:

dd if=xyz.iso of=/dev/sdb

Please help me retrieve the lost data.

BeastOfCaerbannog
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bala
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  • Depending on how bad you need to get data back, can do a lot of reading on how to use testdisk or send it away to a data recovery company(can be expensive). Stop using drive. – crip659 Jul 09 '20 at 21:00
  • Iso is of 4.5gb file. Hard disk is 1tb. I already tried testdisk. But I don't see any information on harddrive. The information on drive is badly needed. – bala Jul 10 '20 at 01:44
  • @karel i will work on ur link to see if I can recover anydata – bala Jul 10 '20 at 01:53

1 Answers1

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You could try testdisk

$sudo aptitude install testdisk

and launch by

$testdisk

I suppose that you could recover some data in the HDD, but for sure not all of it, because the data of the ISO you wrote on it by accident overwrote the original data.

Pablo Vallejo
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