how know nero and other tools that on a disc is a copy protection and break? There are files that scan?
Nero doesn't decrypt any disks, for DVD movies you need something like DvdFab or AnyDVD, for CD's take a look at the copy protection forum here at Myce. You can learn more about DVDFab and Anydvd here at the Movie Copy Software forum.
thanks. But I know how copy.
My interesting is there exists a singatur that nero do not allowed to copy? Or there exists special files that nero know that. How know nero if there is a copy protection on it?
Nero doesn't "know" if a disk has copy protection, it simply won't be able to read it because it doesn't have the decryption "keys"
Yes, something of the kind.Have a look here starting with copy control informationhttp://www.roxio.com/eng/support/compatibility_forum/glossary.html#c
More detailed information can be found e.g. in this document:ftp://ftp.avc-pioneer.com/Mtfuji_7/Proposal/Oct06/Pioneer/READ_DISC_STRUCTURE.pdf