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Should I make a backup of the image file before I repair?

Posted: 13 Sep 2016, 09:33
by spyderrp7
Hello!
After 20 days I have finally managed to make a 100% perfect clone image of a failing drive with ddrescue.
The image file is 3TB. If something goes wrong with the image file, I can't waste another 20 days to build again that image file from the failing drive.
Would you suggest me to make a backup of that image file before I access that file with TestDisk or not?