For slightly scratched discs I use glass cleaner. I've read that toothpaste will repair them but I don't know if it will fix bad scratches. If the information is gone I don't see how anything will bring it back. Sorry, not very helpful.
i thought about repairing a cd once that was still readible. i remember the kit that i saw specifically said it repairs unreadible cd's. but a boomer here told me that those repair kits don't always work, so i gave up on the idea.
if i remember correctly, toothpaste smoothes out rough edges on plastic. my dad once buffed up the scratched head of a flashlight once with it, but i'm not quite sure if it'll do the trick on a cd.
My daughter's boyfried bought a DiscDoctor to repair the scratches on his Playstation discs. I had an old game Return to Krondor that I had tried and tried to install but because of a gouge (and were're talking deep gouge here) it wouldn't read it - I decided I had nothing to lose so decided to try the repair kit - guess what? worked like a charm. Took the gouge out and the game installed and played. I've used it numerous times since then on my software and my son's Playstation games and believe me I have gotten his money's worth In fact I bought one of my own. Wouldn't be without it actually - it's saved me a bunch of money over the past year or so.
With CD's, the stuff the laser reads is next to the label side of the CD, not the underside that is read through. A deep gouge will deflect the laser beam and cause a misread, but the data itself may still be intact.
I'm not sure where the data is on a CDR though. And I think Dark Fall came on a CDR.
If you live near a Compusa Store. They can regrind the underside mirror of the CD for you for 5.00. If y'all remember my horrible nightmare with Ghosts and Simon 1 back in October, that's how I was able to completely fix it. (I had started with Colgate toothpast and it did remove most of the sratches except for one deep gouge. Inferno
Inferno, about a year ago I tried Colgate toothpaste on an old CD that had a few surface scratches. It didn't harm the CD, but it also didn't remove the scratches. I must not have done it right. Please tell me how you did it.