Re:Reading your DVDs the RAW way (2007)
by MayeulC on Monday October 14, 2019 @04:22AM
(#21246146)
Quite interesting.
> The software also contains code to properly handle Gamecube optical discs
I suspect this is the real reason behind the experiment. I've been looking for years for a way to get raw DVD data, to decode XBOX discs [1]. Why can't manufacturers give us raw access to the discs? Are they afraid we might use it to break copy protection schemes?
Re:Reading your DVDs the RAW way (2007)
by userbinator on Tuesday October 15, 2019 @07:49AM
(#21257509)
IMHO open software/firmware would already be far more useful, because then you could read discs at a far lower level which greatly aids in data recovery situations; something like the optical disc version of a https://en.wikipedia.org/wiki/KryoFlux , in other words.
The hardware in a drive is very high precision but otherwise quite "mundane", as the article shows.
> The software also contains code to properly handle Gamecube optical discs
I suspect this is the real reason behind the experiment. I've been looking for years for a way to get raw DVD data, to decode XBOX discs [1]. Why can't manufacturers give us raw access to the discs? Are they afraid we might use it to break copy protection schemes?
[1] https://xboxdevwiki.net/Xbox_Game_Disc
Yes. Many CD copy protection schemes worked by messing around with subchannel data, error correction and things like that.
https://en.wikipedia.org/wiki/Compact_Disc_and_DVD_copy_prot...
Reading it reminded me (at least to the best of my knowledge at this point in time!) that THERE ARE NO OPEN HARDWARE CD/DVD PLAYERS.
I think some person or people should attempt a completely open hardware CD and/or DVD and/or Blu-Ray player...
I'd be happy with just a completely open hardware CD player...
The hardware in a drive is very high precision but otherwise quite "mundane", as the article shows.
There is another "independent" firmware for a bluray players, pirate one for Xbox 360 ones :) somewhat hard to get your hands on the source.