Well, they could have succumbed to disc rot if they were stored improperly. Also, you say the bottom is free of scratches, what about the top? Do they work when booted in a PS1 dev unit? Exactly how are they at huge risk if you're taking care of them properly, store them carefully and they should last for quite a while if they're not already damaged.
There isn't anything that should prevent the game from being recognized as a disc by a computer. They've probably gone bad from the sound of things but I'd strongly suggest trying different drives to see if it's a drive specific issue. Could be that the discs have degarded and whatever you're using isn't the best of drives. I keep a Plextor from 2003 installed in my desktop specifically for burning PS1 titles due to crappy lasers.
^^ at risk, aka: can't get the data from them, lost forever, due to possible damages (entropy) and/or file format? (custom) ... not sure if it's relevant, but i get this with some ps retails (or some cd's in general) they absolutely DON'T show up as a volume when the drive has locked onto them. the only way i could be sure if anything was in the drive, was use 'cloneCD'...(and get cdmage as well if you don't have it already? useful) the images dumped and verified via redump.org, there was NO info on 'ghost images with ps' just libcrypt. again, not sure if that'll help? never had any protos/betas to my name, not my thing! all the best recovering them. :smile-new: (others, PLEASE help)
Have you tried the disc in a PS1? that's the best way to know if the seller was telling the truth. If you don't have a chipped PS1 you could try the swap trick. libCrypt doesn't stop a pc from reading the disc completely so that's not the problem.
(update didn't get to my pm's) what i meant was, libcrypt was the ONLY info i could find in relation to ps games, i know for certain it's nothing to do with fileformat. i mentioned it because i was looking into the 'invisible volume' quagmire, found zilch. on that, i couldn't access the disk drives, there was nothing in em afa os was concerned, that's why cloneCD was needed. ... look up 'forensic data recovery' online. there's possibilities but bloody costly. (police forces hire folks to extract data from fucked hdd's, i mean SMASHED disks...not in atoms though, same for optical medias.) take it to a professional cloner/data recovery specialist, it WILL cost you dearly, but history is worth it, if you have the resources that is?! :smile-new:
OUTSTANDING! :smile-new: it's a BLAG when i can't dump a disk using the console or computer standards. (6.5g one-filed xiso anybody?) good to know that danger was averted and the data was recovered. :witless:
We don't tend to lock threads here... especially if the OP is just giving up. It's quite possible someone could come along and contribute some valuable information to it at a later date, and we value such information. Glad to hear you got them working, anyway!
You'd be surprised just how many DVD-ROMs out there are either rebadges or clones of each other. Usually have to go back in time rather than horizontally (same year, different drives) to find something that functions differently. I have a hard time throwing away my older machines for this very reason though I try to have stratification rather than hoarding going on.