With care not to scratch the disc, if the disc is already scratched the cleaning will not help
Most home remedies do not work. Since your disc is already unplayable it would not hurt to try anything on the disc that does not leave a film on the on game disc and dirty your disc reader lens. The best solution is to get the disc professionally polished.
I Have the game disc but i'm worried i'll scratch considering they cost £45
It must be scratched. You can get a someone to remove the scratch for you.... but, it's pretty expensive.
Check the back of a disc there might be a scratch on it. If not it might just be your PlayStation is having trouble reading the disc. Finally maybe your PlayStation is having problems.
Try: NOVUS PC-20 Plastic Fine Scratch Remover or Quixx Paint Scratch Remover All the best
There are several effective metal scratch remover products available on the market, such as the 3M Scratch Remover or the Turtle Wax Scratch Repair Kit. It is recommended to read reviews and compare products to find the best one for your specific needs.
You can go to gamestop.com and search for disc scratch remover. If you do not find it there, search it on SHOPPING on Google.
It is best to fix it with a wax specifically for glass with a scratch remover in it.
There are many online websites which sell scratch remover, such as Amazon. It can also be found at Walgreens and Walmart, and in most hardware stores.
toothpaste
You need a scratch remover. They can be mighty expensive. Would suggest you go to your local game store and ask them if they could repair your disc. If there's a Play'N'Trade any where around you they will repair it.
I use dawn soap and rub it on and it fixes it for me but for the best results you can buy a CD scratch remover.
With care not to scratch the disc, if the disc is already scratched the cleaning will not help
Most home remedies do not work. Since your disc is already unplayable it would not hurt to try anything on the disc that does not leave a film on the on game disc and dirty your disc reader lens. The best solution is to get the disc professionally polished.
In a shop...
A four inch scratch is really big, probably too big for any scratch remover to fix correctly. What you need to do is take your car in to a place that fixes glass. They should have the correct tools to fix the issue.