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
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