Xbox disc

Hello Charlie,

This normally happens when a disc has scratch's on the back of the disc, and wont let the Xbox recognize the disc. If this is happening to every disc (different discs) then there might be a problem inside the xbox. -Josh

Learn what to do if the disc drive on your Xbox 360 console can’t read discs or won’t open or close.

Xbox disc drive solution

Do other game discs work in your Xbox? If so, it's likely an issue with the GTA V disc. If not, there may be an issue with your disc drive. Another step would be to try the disc in another Xbox 360 console. If it doesn't work in a different Xbox, it's definitely
a disc problem, if it does, again, there may be an issue with your disc drive.

Ooooh, that's no fun! Let's try this: Xbox 360 Can’t Read Disc | Xbox Can’t Read Disc

Sometimes it can be the disc, or your xbox. The simple way to find this out is to play another game on your xbox. If the disc works, then it's not your xbox. If it's the disc, then it's a scratch or a chip that has happened, or you laser burned your disc.
Laser burning your disc happens by moving your xbox while the disc is in and the xbox is on, I've done this to a Battlefield 3 disc before. You can always clean the disc, blow some air into your xbox, and give it another shot. Otherwise, it's probably a damaged
disc, in this case, you should just pick up another copy of the game. If you have a warranty on the disc, you can get a replacement for free.

Hope this helps!

Sincerely,

Loco.