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afterdawn.com > forums > consoles > ps2 - general discussion > how does sony make ps2 discs so they will boot on a ps2?
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How does sony make ps2 discs so they will boot on a ps2?
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freebeer0
Junior Member
_ 		9. August 2006 @ 05:43 _ Link to this message    Send private message to this user   
I have always wondered how sony makes there ps2 disc bootable on the ps2 but the public cannot make a bootable disc? My guess is the machine used to make the disc does anyone know why?
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WEStar
Senior Member
_ 		9. August 2006 @ 07:21 _ Link to this message    Send private message to this user   
well, they don't burn millions of discs that's for sure. They use a disc stamper which stamps the discs, and the reason why we can't just make burned copies of games and have the ps2 read them is because of protection that sony implements on the games as far as I know they are the following:
1) they stamp data in an area of the discs which are unreadable by regular dvd-rom/rw drives (the ps2's drive can access this area)
2) they add bad bits within the data which regular burners are not
designed to duplicate.
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NTSC DNAS threads.
http://forums.afterdawn.com/thread_view.cfm/5/198137 (my post with info on playing different region games online)
http://forums.afterdawn.com/thread_view.cfm/291526
lilg_06
Senior Member
_ 		9. August 2006 @ 07:52 _ Link to this message    Send private message to this user   
Check this site out, the machine sony uses puts macrovision protection on the disk, when out ordinary readers read the disk it cant read that section because its stored as unreadble data/corrupt.
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freebeer0
Junior Member
_ 		9. August 2006 @ 08:15 _ Link to this message    Send private message to this user   
So how are we allowed to copy this discs and burn them as if they were just a plain old cd?
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Ripper
AfterDawn Addict
_ 		9. August 2006 @ 08:51 _ Link to this message    Send private message to this user   
Becos that's what mod chips are for etc...
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freebeer0
Junior Member
_ 		9. August 2006 @ 09:48 _ Link to this message    Send private message to this user   
Yea but dude that doesnt answer my question. If the print data that comes up as corrupt data then wouldnt that be appart of the game and that meaning that ripping a game would not give you all of the information?
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Ripper
AfterDawn Addict
_ 		9. August 2006 @ 09:59 _ Link to this message    Send private message to this user   
Oh soz man my bad...I misunderstood what you meant.

As for your question - soz I don't know the answer


Soz lol
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WEStar
Senior Member
_ 		9. August 2006 @ 11:22 _ Link to this message    Send private message to this user   
you copy the game data and only the game data, your burner doesn't read/write the bad bits/sectors. As far as the unreadable section of the disc, it's only used to verify the validity of the disc and is not needed to play the game, so essentially what a mod does, is trick the ps2 into thinking that the burned disc is a valid ps2 disc. That's why the ps2 boots the burned disc because it receives the needed code/verification data from the mod. When swapping, the ps2 reads the printed original disc and boots up, once it's booted up you trick the ps2 into thinking that the tray/cover has never been opened and you swap, the ps2 continues booting up the game data from a burned disc thinking it's still running the original disc.
[ + quote]
NTSC DNAS threads.
http://forums.afterdawn.com/thread_view.cfm/5/198137 (my post with info on playing different region games online)
http://forums.afterdawn.com/thread_view.cfm/291526
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For more PS2 discussion, please visit our sister site, Blasteroids.com
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