It's implemented in drive firmware, so the drive will refuse to read protected sectors without authentication.
That was a late edition. I have working DVD drives that will happily read anything on a disc, even if they can’t decode it.
Newer drives I bought will refuse reading what they won’t decide themselves (e.g. wrong region).
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That was a late edition. I have working DVD drives that will happily read anything on a disc, even if they can’t decode it.
Newer drives I bought will refuse reading what they won’t decide themselves (e.g. wrong region).