Update: One of my discs work now. The other does not. I am not sure which is which.
READ BELOW
I have two Halo: Reach discs and here are their problems:
Reach Disc 1 -
Disc condition: No scratches at all and a tiny bit dirty.
Problem: When I start the game right after the blue changing emblem loading sign the whole screen turns black and stays like that until about 1 minute after it says to clean my disc, shows suggestions, etc.
Reach Disc 2 -
Disc condition: 1 medium crack/scratch, 1 very tiny crack both leading from the little silver circle to the ''main circle''.
Problem: 50% of the time it works by putting the disc in the tray 3 or 4 times to make it work. The other 50% says it can't read the disc. (Says Open Tray)
Second problem: When it does work only 1 of these things work: JUST Forge World Maps or Everything except Forge (including campaign). This drives people insane on Matchmaking/Xbox Live when they can't pick their choice even if it's majority including me.