Things You'll Need
Instructions
Use metal polish to clean the CD. Take a paper towel or other soft rag and spray a small amount of polish onto it. Wipe from the inside of the CD outward and repeat until you have covered the entire disc. Let the polish dry when you are finished.
Place a small amount of buffing compound on a clean paper towel. Rub the compound along the nick so that it will fill in the missing portion of the CD. Apply more compound so that it rises above the edge of the CD. Allow the compound to dry.
Use a low grit sandpaper to buff the compound down so that it is even with the edge of the CD.
Place the game in your console to test it.