Things You'll Need
Instructions
Cracks
Wipe the disc down gently with a clean cloth. This is to remove any small plastic shards that may have resulted from when the disc cracked.
Apply a small piece of transparent scotch tape along crack on the labeled side of the disc. This will hopefully hold the cracked seam in place.
Trim off any excess tape that goes over the edge of the disc. The excess could cause the disc to not spin properly.
Scratches
Squeeze a teaspoon of gritty toothpaste on to the microfiber cloth. Do not use gelled toothpaste, as it does not have the abrasiveness to buff out the scratches.
Rub the scratched portion of the PS3 game disc in gentle circular motions with the toothpaste. You should begin to see the minor scratches fade away as you wear them down. Continue until the scratches have been removed to your satisfaction.
Rinse the toothpaste off the disc under cold water and dry it with a clean towel. Test the game out to see if your fix worked.