Hello This Christmas, my children received some (expensive) PC games for the first time. I backup all expensive CDs that come into our house, as they inevitably end up damaged. However, some of these CDs are copy protected. Some googleing tells me that they are protected with a technology called scandisk. Does anyone know a linux command which will copy these (copy-protected) CDs? John
Am Mittwoch 12 Januar 2005 11:44 schrieb John Ryan:
Does anyone know a linux command which will copy these (copy-protected) CDs? From my technical understanding, this should work(untried):
1. dd if=/your/cd-device of=your-game.iso Makes a bit-by-bit copy, does not care about the contents. 2. cdrecord -dao -dev=/your/cd-burner your-game.iso Not too sure about those options, check the docu on this. hth dan
Dan Am wrote:
Am Mittwoch 12 Januar 2005 11:44 schrieb John Ryan:
Does anyone know a linux command which will copy these (copy-protected) CDs?
From my technical understanding, this should work(untried):
1. dd if=/your/cd-device of=your-game.iso Makes a bit-by-bit copy, does not care about the contents.
2. cdrecord -dao -dev=/your/cd-burner your-game.iso Not too sure about those options, check the docu on this.
hth dan
Well, if a CD/DVD is copyprotected it isn't as easy as you obviously think it is. Try to copy an encrypted Video-CD/DVD this way and you'll see, that even that doesn't work this way. It takes the decoder and in his case it is similiar. Martin P.S. even though he might be lucky to anyways be able doing it your way but I doubt it.
On Wed, 2005-01-12 at 08:47, Martin Deppe wrote:
Dan Am wrote:
Well, if a CD/DVD is copyprotected it isn't as easy as you obviously think it is.
Try to copy an encrypted Video-CD/DVD this way and you'll see, that even that doesn't work this way. It takes the decoder and in his case it is similiar.
Martin P.S. even though he might be lucky to anyways be able doing it your way but I doubt it.
To experiment without actually burning a cd copy the cd using dd to a file and then try to mount the ISO using -o loop to the mount command. I don't have a copy protected cd to try this with. -- Ken Schneider UNIX since 1989 SuSE since 1998 * Only reply to the list please*
Try to copy an encrypted Video-CD/DVD this way and you'll see, that even that doesn't work this way. It takes the decoder and in his case it is similiar. But how could that possibly be ?? The problem just cannot be with
Am Mittwoch 12 Januar 2005 14:47 schrieb Martin Deppe: dd given the way it works. Must be something with the recording. I don't have this kind of DVD so I cannot try it out just now. How about something like dd if=game.iso| cdrecord -options - Might that might work ? regrds Dan
* Dan Am
Try to copy an encrypted Video-CD/DVD this way and you'll see, that even that doesn't work this way. It takes the decoder and in his case it is similiar. But how could that possibly be ?? The problem just cannot be with
Am Mittwoch 12 Januar 2005 14:47 schrieb Martin Deppe: dd given the way it works. Must be something with the recording. I don't have this kind of DVD so I cannot try it out just now. How about something like dd if=game.iso| cdrecord -options - Might that might work ?
Copying DVDs that are Deccs encrypted , and copying most game CDs is indeed
simply a matter of dd if=... of=...
However some DVDs/CDs are deliberately not iso9660 standard compliant, and
in that case dd will fail.
Currently listening to: nirvana1991-12-31d1t22
Gerhard,
The Wednesday 2005-01-12 at 15:16 +0100, Gerhard den Hollander wrote:
Copying DVDs that are Deccs encrypted , and copying most game CDs is indeed simply a matter of dd if=... of=...
However some DVDs/CDs are deliberately not iso9660 standard compliant, and in that case dd will fail.
At the beginning of the PC times, floppies were copy protected by, for example, burning a hole with a laser, and thus producing an error on a certain sector. Another way was to record a sector with weak magnetization. But we had a program (Copyrite, I think) that was able to detect and simulate those errors in the backup copies. It worked well with the PC, but I had no look with the AT types (higher density, perhaps, or tricked drives, dunno. There might be something equivalent nowdays. Note: if someone thinks that it might be illegal, the Copyrite people were sued, and they won: users have the right to make backup copies. After the trial, copy protection schemes almost disappeared. Almost :-/ -- Cheers, Carlos Robinson
to add another 2cents to the mix one of the copy protections for cd's was to make it impossible (physically) for the CDwriter to write the data. Could be read fine, just not re-written. What they did was took advantage of the cdwriters firmware programming. The firmware was written to optimise the way data is written to the blank to get as fast a write a possible, I don't remember the exact specs so, please don't be anal, just listen to the concept. Something to the effect of using 14bit chunks or something like that. So, all that was needed was to organize the bits in 15 bit chunks that made it impossible for the drive to change to 14 bit. I remember reading about this on the clonecd site where it listed each drive models ability to deal with this particular encoding. So, once the protection became popular, the newer drives were made without the ability to do this. I remember that Plextors were mostly able to do this. anyway, B-) On Wednesday 12 January 2005 10:09 am, Carlos E. R. wrote:
The Wednesday 2005-01-12 at 15:16 +0100, Gerhard den Hollander wrote:
Copying DVDs that are Deccs encrypted , and copying most game CDs is indeed simply a matter of dd if=... of=...
However some DVDs/CDs are deliberately not iso9660 standard compliant, and in that case dd will fail.
At the beginning of the PC times, floppies were copy protected by, for example, burning a hole with a laser, and thus producing an error on a certain sector. Another way was to record a sector with weak magnetization. But we had a program (Copyrite, I think) that was able to detect and simulate those errors in the backup copies. It worked well with the PC, but I had no look with the AT types (higher density, perhaps, or tricked drives, dunno.
There might be something equivalent nowdays.
Note: if someone thinks that it might be illegal, the Copyrite people were sued, and they won: users have the right to make backup copies. After the trial, copy protection schemes almost disappeared. Almost :-/
-- Cheers, Carlos Robinson
Carlos E. R. wrote:
Note: if someone thinks that it might be illegal, the Copyrite people were sued, and they won: users have the right to make backup copies. After the trial, copy protection schemes almost disappeared. Almost :-/
FWIW, in Canada, we pay a levy on blank CDs, cassettes etc., for the *RIGHT* to copy music. It'd be very interesting to see what would happen, if someone took the music companies to court, for violating the rights, of someone who has paid that levy.
On Thu, 13 Jan 2005 01:16 am, Gerhard den Hollander wrote:
* Dan Am
(Wed, Jan 12, 2005 at 03:04:26PM +0100) Am Mittwoch 12 Januar 2005 14:47 schrieb Martin Deppe:
Try to copy an encrypted Video-CD/DVD this way and you'll see, that even that doesn't work this way. It takes the decoder and in his case it is similiar.
On the Mac there is a program called DVDbackup that decrypts, de-regionalises DVDs and records to HD. Once it's run you can play the movie off your HD. If you just copy CSS encrypted files, you need decoding hardware in the DVD drive to read them.
But how could that possibly be ?? The problem just cannot be with dd given the way it works. Must be something with the recording. I don't have this kind of DVD so I cannot try it out just now. How about something like dd if=game.iso| cdrecord -options - Might that might work ?
Copying DVDs that are Deccs encrypted , and copying most game CDs is indeed simply a matter of dd if=... of=...
However some DVDs/CDs are deliberately not iso9660 standard compliant, and in that case dd will fail. Some CDs have a visible thin outer track that upset some drives, you just hear the heads swinging to and fro. These can be made standards compliant by running a whiteboard marker around the outer edge. Obscure the "bonus" track and the CD becomes visible.
michaelj
Michael James wrote:
On Thu, 13 Jan 2005 01:16 am, Gerhard den Hollander wrote:
* Dan Am
(Wed, Jan 12, 2005 at 03:04:26PM +0100) Am Mittwoch 12 Januar 2005 14:47 schrieb Martin Deppe:
Try to copy an encrypted Video-CD/DVD this way and you'll see, that even that doesn't work this way. It takes the decoder and in his case it is similiar.
On the Mac there is a program called DVDbackup that decrypts, de-regionalises DVDs and records to HD. Once it's run you can play the movie off your HD. If you just copy CSS encrypted files, you need decoding hardware in the DVD drive to read them.
Well that's exactly what I meant, you need a program that can decrypt/decode the CD/DVD, which dvdbackup is in this case. BTW dvdbackup runs under linux as well (I tried it already).
But how could that possibly be ?? The problem just cannot be with dd given the way it works. Must be something with the recording. I don't have this kind of DVD so I cannot try it out just now. How about something like dd if=game.iso| cdrecord -options - Might that might work ?
Copying DVDs that are Deccs encrypted , and copying most game CDs is indeed simply a matter of dd if=... of=...
However some DVDs/CDs are deliberately not iso9660 standard compliant, and in that case dd will fail.
Some CDs have a visible thin outer track that upset some drives, you just hear the heads swinging to and fro. These can be made standards compliant by running a whiteboard marker around the outer edge. Obscure the "bonus" track and the CD becomes visible.
Quite interesting, thanks. BTW, it is great what I am learning on this list. I consider myself an IT professional and still ...!
michaelj
Nice to be with you guys :-) Martin
On Wednesday 12 January 2005 12:44, John Ryan wrote:
Does anyone know a linux command which will copy these (copy-protected) CDs?
Try cdrdao read-cd --driver generic-mmc-raw just add the options you need to get it going on your system (man cdrdao). Then write with cdrdao write --driver generic-mmc-raw I haven't found a copy protected disc that I can't copy with this method. -- Kind regards Hans du Plooy Newington Consulting Services hansdp at newingtoncs dot co dot za
On Wednesday 12 January 2005 10:23 am, Hans du Plooy wrote:
Try
cdrdao read-cd --driver generic-mmc-raw
just add the options you need to get it going on your system (man cdrdao). Then write with
cdrdao write --driver generic-mmc-raw
I haven't found a copy protected disc that I can't copy with this method.
Doesn't work with the Micro$oft Flight SIm CD. They have an error on a record that just causes the CD to hang on a read. I've tried DD and it can read the disk fine but doesn't like writing to cdrecorder. Says it's a read-only filesystem.
Does anyone know a linux command which will copy these (copy-protected) CDs?
There is a fine library out there called libdvdcss that sometimes helps out with it. Packman used to give .rpm packages, but the last time I visited his site he had a sort of an announcement that the file had been removed due to brand new EU copyright laws. Howerver, he [packman] was very instructive, as always, and he left us some substantial info on how to compile it. libdvdcss will help you out with any sort of video material. As far as games are concerned... other know-hows have spoken.
participants (12)
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Brad Bourn
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Bruce Marshall
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Carlos E. R.
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Dan Am
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Gerhard den Hollander
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Hans du Plooy
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James Knott
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John Ryan
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Ken Schneider
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Martin Deppe
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Michael James
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Predrag Micakovic