Comment by licebmi__at__
4 years ago
PS1 (or PSX) had a technique for copy protection that depended on physical characteristics of the cd, something that was not copied when you made a backup. Still the mechanism was simple enough that you could bypass this check with a modchip, or even with a technique called disk swapping, in which you could swap an original disk at the right time with a pirated one and bypass the check. PS2 also required a modchip, AFAIK, there was not any technique to get around it.
On the next generations of consoles, ps3 and ps4 were software modded, so you could run copies, but they were loaded from the machine’s hard drive, so no cd copies were necessary.
There’s a modern way to play burnt dvds with no swap on a ps2. It pretends to be a video DVD (so no wobble groove check) and uses a buffer overflow in the DVD menu code handling to boot the game.
On PS2, there were certain games that could be exploited to allow a software mod to load.