Originally posted by Drake1009
Problem is that the PS2 having a tray (my guess) doesn't close as quickly, so it fails the verification before the tray was in again.
Unless the trey takes about 5 minutes to go back in, I doubt it. As until the drive actually reads the disc, everything is the same. Loading the disc back in is just like cliping it in and shutting the lid on the original.
It's probably down to the way that the drive reads the disc, and ends up saying "no" because it doesn't get the same result. Same way that some PC games have problems with different drives due to it not reading the protection correctly.