This is just a convenient place for me to bookmark this information as it is just a copy of James Litten's excellent page about data rescue.
The steps are simple. All commands are to be run on a single line.
1. Clean the disc.
If the disc is cracked, it may come apart in the drive. You might try a small dab of superglue on the very outside of the crack to hold it together.
2. First pass (runs about 30 minutes).
$ ddrescue -n -b 2048 /dev/sr0 ~/recovered/mystuff.iso
~/recovered/mystuff.log
3. Mount the image and see how we did.
4. Take a second pass if we need it (about 24 hours).
$ ddrescue -d -b 2048 /dev/sr0 ~/recovered/mystuff.iso
~/recovered/mystuff.log
5. Take a third pass maybe with the CD/DVD in a different drive (24+ hours).
$ ddrescue -d -r 3 -b 2048 /dev/sr1 ~/recovered/mystuff.iso
~/recovered/mystuff.log
The steps are simple. All commands are to be run on a single line.
1. Clean the disc.
If the disc is cracked, it may come apart in the drive. You might try a small dab of superglue on the very outside of the crack to hold it together.
2. First pass (runs about 30 minutes).
$ ddrescue -n -b 2048 /dev/sr0 ~/recovered/mystuff.iso
~/recovered/mystuff.log
3. Mount the image and see how we did.
4. Take a second pass if we need it (about 24 hours).
$ ddrescue -d -b 2048 /dev/sr0 ~/recovered/mystuff.iso
~/recovered/mystuff.log
5. Take a third pass maybe with the CD/DVD in a different drive (24+ hours).
$ ddrescue -d -r 3 -b 2048 /dev/sr1 ~/recovered/mystuff.iso
~/recovered/mystuff.log
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