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Data discs?

Less robust than redbook when damaged, though, so not for the masses.

But I would think that after 20+ years, a disc design that is both simple to extract bit-perfect data, but having some added redundancy to cover physical damage, would be possible. Imagine what you could do, for instance with a DVD disk with 4.5GB of data storage? It would be trivial to take a 660MB music CD's data and place multiple copies of file sectors all over the thing, so that it would take some real catastrophe to make even a single bit non-recoverable.


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