| 1 |
On 2009-05-16, Ricardo Bevilacqua <rus.spes@×××××.com> wrote: |
| 2 |
|
| 3 |
> Why don't you use the (very old, but still effective) dd [1] |
| 4 |
> command to create an ISO image? |
| 5 |
|
| 6 |
Because it won't work. |
| 7 |
|
| 8 |
Have you tried it with an encrypted DVD? |
| 9 |
|
| 10 |
> dd if=/dev/<your-dvd-device> of=<some-path>/bakup.iso bs=2048 conv=sync,notrunc |
| 11 |
> |
| 12 |
> That will make an exact copy of your DVD into your hard disk. |
| 13 |
|
| 14 |
No, it won't. Commercially sold audio and video DVDs are |
| 15 |
encrypted so the DVD drive can't read them unless you load a |
| 16 |
decryption key into the DVD drive. DVD players have keys built |
| 17 |
into them. There are software packages like DeCSS and |
| 18 |
libdvdcss that either have a built-in key or know how to figure |
| 19 |
one out. |
| 20 |
|
| 21 |
http://en.wikipedia.org/wiki/Content_Scramble_System |
| 22 |
|
| 23 |
http://en.wikipedia.org/wiki/DeCSS |
| 24 |
http://en.wikipedia.org/wiki/Libdvdcss |
| 25 |
|
| 26 |
Audio DVD uses a different scheme (that's also been broken): |
| 27 |
|
| 28 |
http://en.wikipedia.org/wiki/DVD-Audio |
| 29 |
|
| 30 |
> I don't know if this is what you want to do. |
| 31 |
|
| 32 |
Yes it is what he wants to do, but your suggestion is useless |
| 33 |
(as could been seen from the OP's post which showed the |
| 34 |
read-errors you get when you try to used tools like dd to read |
| 35 |
encyrpted DVDs). |
| 36 |
|
| 37 |
-- |
| 38 |
Grant |
Archives