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A thought occurred to me on a recovery method while reading this article: If you had a disc that was marginal, where it might or might not read correctly depend
by korethr 6y ago
A thought occurred to me on a recovery method while reading this article: If you had a disc that was marginal, where it might or might not read correctly depending on the phase of the moon, would it be possible to do something like take multiple raw images of the disc, perhaps using multiple different drives, and collectively use the images so captured to isolate out the bad parts and splice together a valid image file?
Or am I failing to grok the degree to which It's Complicated?
- gruez 6y agoYeah, apparently there's software that does that to get a rip that's identical bit for bit. http://www.exactaudiocopy.de/en/index.php/overview/basic-technology/extraction-technology/ http://www.exactaudiocopy.de/en/index.php/overview/basic-tec... http://www.accuraterip.com/ http://www.accuraterip.com/
- stordoff 6y agoFor audio CDs, there's also CueTools, which can repair slightly damaged rips (I assume it stores some parity information). I have a CD where that appears to have either two slightly different pressings or a bad batch, and one has an audible click at the end of one of the tracks. CueTools detects this error, and lets me fix it.
- pronoiac 6y agoFrom memory here, GNU ddrescue is what you're looking for: https://www.gnu.org/software/ddrescue/ https://www.gnu.org/software/ddrescue/
- endgame 6y agoI used this a few months back to get some data off old floppies, along with some suggested commands from https://www.archiveteam.org/index.php?title=Talk:Rescuing_Floppy_Disks https://www.archiveteam.org/index.php?title=Talk:Rescuing_Fl... Very neat piece of software.
- Lammy 6y agoThat's what Exact Audio Copy does when you rip a scratched CD, except on the frame-level.