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dE_logics
Advocate
Joined: 02 Jan 2009
Posts: 2253
Location: $TERM
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 Posted: Sat Oct 02, 2010 4:17 pm Post subject: Copy protection and dd |
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dd is a low level block copy, so be it a protected DVD or a HDD with a bad fs, it should copy it blindly and make an image off it.
However, I've a protected DVD at hand, and it quits before the complete image of the DVD is made... at round ~400 MB... so any reasons why is this happening, and how to make dd do this job?
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furanku
l33t
Joined: 08 May 2003
Posts: 905
Location: Hamburg, Germany
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| Posted: Sat Oct 02, 2010 4:47 pm Post subject: |
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I think, this will not work for CSS encrypted Video DVDs anyway as the key is stored in the lead-in of the original DVD in and will because of that not be copied. See for example Wikipedia on CSS:
| Quote: | | The purpose of CSS is twofold. First and foremost, it prevents byte-for-byte copies of an MPEG stream from being playable since such copies will not include the keys that are hidden on the lead-in area of the restricted DVD disk. |
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dE_logics
Advocate
Joined: 02 Jan 2009
Posts: 2253
Location: $TERM
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| Posted: Sat Oct 02, 2010 4:52 pm Post subject: |
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So its more of a hardware thing... that's why the other drive worked.
Modern DVD drives are build with this thing?
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tomk
Bodhisattva
Joined: 23 Sep 2003
Posts: 7221
Location: Sat in front of my computer
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| Posted: Sat Oct 02, 2010 5:01 pm Post subject: |
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Locked. Please don't discuss things that could be illegal.
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