What makes a copied DVD a copied DVD?

Ok, this is not about pirating games or movies or music, this is about how a DVD is actually copied (the technology behind it).

What makes a copied DVD a copied DVD? whats missing from an \'original\' disc thats been mastered by the record label/studio/games house?

Like, why if you put a copied DVD game into a PS2, it doesn\'t work? What is missing exactly? How does the machine know its not \'original\'?

did you eat paint chips as a kid?

[Paul2]

Good question actually,

I never thought of it.  My guess would be the ps2 have some sort of built in code to prevent people playing copy dvd instead of the original.  How does this code tell if a disc is a copy instead if it\'s original?

My guess would be disc were burned using laser that write into the dye of the disc while original disc is press...how can a ps2 tell?

even i don\'t understand what i am saying,  so i gotta run.

[Kurt Angle]

All ps2 originals are on silver discs, copies are on purple discs. The bios in the machine will be programmed to read only the silver ones. That is where the m0dchips come in...... :sconf:

All ps2 originals are on silver discs, copies are on purple discs.

you definately ate paint chips as a kid

[videoholic]

I thought they burned errors into the disc that your computer can\'t burn.  Then the PS2 looks for these errors.  At least that\'s how they use to do it.

[Paul2]

Kurt Angle,

How about blue disc CD-ROM ps2 and black disc PSone?

[Evi]

Yes, there is specific coding implemented in the PS2 discs. It recognizes PSone discs as well, but the original PSone could play burned games without a mod chip, because it was unable to recognize the coding [crappy technology]. It just read discs as discs. At least that\'s what I experienced when my friend played a burned game on my PSone.

So why can\'t coders just crack the code and create a program/writer, to copy the disc and the code?

Im not endorsing pirating, im simply interested as to how it works. What if someone got a hold of a real DVD presser, like the ones used by studios etc?

they already do...geez.

[§ôµÏG®ïñD]

Originally posted by EviscerationX
Yes, there is specific coding implemented in the PS2 discs. It recognizes PSone discs as well, but the original PSone could play burned games without a mod chip, because it was unable to recognize the coding [crappy technology]. It just read discs as discs. At least that\'s what I experienced when my friend played a burned game on my PSone.

bzzzzt. Ps1 still needed a mod chip. It didn\'t play pirated games unless u used a rainbow adapter or it was modded.

Racer, they already have, and burners that help hardware wise too.

Im still confused, so why can\'t big underground pirating studios reproduce a PS2 game (for example) that can be played on an unchipped console as if it was an original?

If SONY puts special code on an original disc, why can\'t pirates who use similar hardware?

[§ôµÏG®ïñD]

Whos to say they can\'t.  But current computer hardware will not reproduce 1:1 ratio copies on certain games, and because blanks use a dye rather then being stamped/molded like originals. They never will.

[Paul2]

I guess Soulgrind must have modded his psOne and ps2 and been playing lots of pirated games....

or shall i say, this guy speaks from experience....

J/K...

[§ôµÏG®ïñD]

ps1 was modded (for imports) ps2 is not.