History
There have been several editions of SafeDisc over the years. Each one has the goals of making discs harder to copy. The current revision is marketed as SafeDisc Advanced.
The early versions of SafeDisc did not make the discs very difficult to copy. Recent versions 2.9+ can produce discs that are difficult to copy or reverse engineer, requiring specific burners capable of emulating the "weak sectors" and odd data formats that are characteristic of SafeDisc.
Read more about this topic: Safe Disc
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