Game won't fully install from disk

Hey again @Goofball1969. Does this happen with all discs or only this specific one..? Can you try any other disc to make sure ?

If it's only this very specific disc, I'd say that your disc is either, well, dirty or damaged. I clean my discs using microfiber cloth, doing straight lines from the inner portion towards the outer. Some people simply spray Windex on them and wipe them with paper towels but I haven't ever used that method. Just do not use alcohol to clean them ever. Always also hold the games by their sides, not the top or bottom, to ensure they wouldn't get grimy by your own hands. If it still doesn't work, I'd go to your retailer and ask for a replacement disc as chances are your disc is indeed damaged.

If this happens on all of your discs though, well. With any luck it would only be just a case of dirty lens. That can be cleaned with a lens cleaner. I've personally used before Endust Lens Cleaner : https://www.ebay.com/p/Endust-Lens-cleaner-262000/710123169

If cleaning the len wouldn't work then it likely would be a faulty laser and that's a bit of a more problematic thing. If your console isn't under warranty and cannot be sent to repair, it's kind of a lost cause.

Let's hope for the best.