How do you make a ps2 disk work when scratched up?

CDFixers.com will professionally refinish your disc for $2 bucks.

You can use disk cleaning spray, or take it down to a game shop and ask them to clean it for you.

Toothpaste! Toothpaste DOES in fact, WORK!

You'd be surprised at how well this common household gel will buff out scratches on your beloved game.

However, this process may take awhile

All you need is toothpaste (With baking soda, as it helps to "sand" out the scratches) and some Q-tips.

I would start out with putting the toothpaste in a small cup, then getting comfortable. (again this process takes some time)

apply the toothpaste to your Q-tip and start at the outer edge of the CD.

Slowly apply it in small circles in towards the inner edge of the disk.

Do this until you've covered the entire CD.

As soon as you feel that you've applied it enough, rinse it under water. I would rinse it twice, just to make sure that you haven't left any toothpaste on the CD.

Let it air dry, so you don't end up adding more scratches to it.

The results are quite visible to, I was astonished when I first tried it and noticed that the majority of scratches were completely gone.