PS1 and PS2 copies why dont they work?

[Jejunum]

This may seem like a stuipd question but oh well;

how does a ps1 or ps2 without a mod chip know that the cd inserted is a copy...especially when there exist programs like clone cd to defeat supposed antipiracy schemes?


thanks!

 

[Ameesh]

writing lasers cannot write to all parts of the cd that reading lasers can read to.

 

[BeauJangles]

Yea, they put special initilization codes into those parts of the CD... if they aren't read at the begining the playstation 1 or 2 thinks of it as a media cd (music cd or DVD).

 

[amnesiac]

PS games have a "bad sector" near the beginning of the disc, most writers view the sector as a correctable error and automatically fix it. Voila, copy protection works.

There are some writers that can be hacked with firmware to bypass this, AFAIK.
I could be totally off on thos but that's what I remember.

 

[Jejunum]

but arent progies like clone cd designed to defeat those initilization codes by copying teh cd exactly?

still dont see why a copy of a game wouldnt work !

 

[TallBill]

its cuz the black bottom.. just overcome this by using a black magic marker to cover the bottom of the CDR

 

[StageLeft]

Some of the newer burners on the market are able to copy ALL PC games with a prog like clone cd - only a select few burners can do this. You need to get a perfect image ripped to your hardrive and then burn that to CD.

I also would like to know the answer though... it seems to me that it should be possible for a good burner to burn all of the data that they read, but I know that clone CD says it cannot make PS copies, although there are not currently any PC games that cannot be copied with clone CD and one of the few burners that support all of it's features.

 

[Jejunum]

<< its cuz the black bottom.. just overcome this by using a black magic marker to cover the bottom of the CDR >>



LOL-and for ps2 games on cdrs i can just use a blue magic marker?

gahhh maybe i should post this in highly technical

 

[Time2Kill]

<< but arent progies like clone cd designed to defeat those initilization codes by copying teh cd exactly?

still dont see why a copy of a game wouldnt work ! >>



The cdrom in a ps1/2 can read farther to the inside of a cd than a normal cd player/burner. So there is data on the inside track of the cd that a normal burner/reader can't write/read because the laser eye can't move over far enough to get to it...

Understand now?

 

[kpxgq]

everything u wanted to know about PSX backup workings.. http://www.geocities.com/~rootuser/psxcontents1.html

 

[Jejunum]

still doesnt explain how a ps1 or ps2 knows that a cdr copy is in the drive ...

 

[royaldank]

The PS1 and PS2 discs have information stamped on the actual disc. If the disc doesn't read it, then it's treated as a non liscensed disc.

The actual stamp is further inside than your burner can access or burn. Thus, when copying, the laser in your computer starts at the normal beginning and reads from there. The actual stamp on the real PS2 disc is never seen nor can it be reproduced.

The only people that have found a way around this seems to be interact. Their GameShark discs are not liscenced and can still be read in the units. Although, the new PS2 units where changed slightly so that they wouldn't read the new discs. However, they've fixed it in the new GameShark.

 

[Kronos]

i have heard there is this load disc you can burn that you put in before you play the burned disc. Then after the load disc loads you pop it out and put the game in there. Ive never done it but i heard about it. Has anyone done or heard of this besides me?

 

[royaldank]

I've heard of it...but I've never seen one work (except with a dreamcast).

This seems to come up every now and again on the newsgroups that deal with PS2 stuff. No body on there has ever gotten one to work, nor has one ever been posted that worked.

 

[Jejunum]

where do u get the new gameshark

i can find gameshark easily; but no mention about new one...

i wanna see highly techincal stuff about info stamped on disc; it seems neato

 

[royaldank]

<< i can find gameshark easily; but no mention about new one...
>>



The new GameSharks are in stores now. v1.93. If there isn't a little white sticker on the back of the GameShark box, then it's most likely the new ones.

For the latest PS2 machines with a date code of 1C, only the new v1.93 GameShark will work as Sony changed the bios slightly to try and stop the gameshark from working. It took InterAct a few weeks to release the new one that is now compatible. Check CompUSA or Best Buy for a new one (w/o version sticker) since they probably have new products arriving most frequently.

As for stamped (or pressed) info for the machines to read, I'm not sure where to find info on this. I was told by a developer a couple years ago, and it always seemed logical enough for me to believe. I could be wrong, though.

 

[Noriaki]

<< still doesnt explain how a ps1 or ps2 knows that a cdr copy is in the drive ... >>

You've got that backwards...

The Console does not know that the disc is a CDR copy.
It knows that the disc is not a Playstation game, whether it is a copy or an Audio CD, the console has no idea.

And I believe it works like Time2Kill said....there is data closer to the inner "hole" than regular CD drives can read. It's a special feature of the playstation CD drive that it can read closer to the hole than regular drives. So they put some data in that extra space that regular CD drives can't get at.

Specifically they put an initialization string so the console can differntiate between games and non-games.

 

[vash]

The PS1/PS2 cdrom drive is looking for copy protection information at the beginning of the CD. If the copy protection information isn't there, the PS1/PS2 will reject the CD and not allow it to be played.

This can be overcome with a modchip. The modchip just makes the PS1/PS2 read the copy protection, of the backup to be considered "good" versus "bad" as without the modchip. You can get past these with the "swap" trick because you will use an original PS1/PS2 game to read the beginning of the CD, then the rest of the loading will be fine.

Software that is used to make the dupes cannot copy the copy protection information. They can, however, clone the areas, and still make them readable to the PS1/PS2 laser. The PS1/PS2 drive will know these cds aren't originals because only originals have the copy protection information on them. If someone could find a way to 100% clone the copy protection, and put that onto a CDR writing software, Sony would come on them pretty hard with their lawyers.

vash

 

[Jejunum]

how does one use a gameshark to use backups of ps1 or ps2 games on a ps2?

as far as i can tell they dont talk about it on the website; mayhaps its a undcoumented feature?

 

[LiQiCE]

The Gameshark doesnt allow you to play backups, you need a modchip for that.