Failure to load

I have had load failures on some days even though our disk is installed. I thought it was a server or internet problem. Actually, we have two consoles. One is running the installed disk version of Reach. The other is running the download version. We have
experienced occasional load failures on both.

depending on the scratches you can try a scratch kit from gamestop sometimes they fix the game

Have you tried performing a NAT test? Here is the link, please look under column 3.

https://beta.support.xbox.com/help/Hardware-Network/connect-network/network-settings

Thanks DangerousBard,

That was the problem. I took a close look at the disk and noticed an unusual "mark" on the inside of the disk. Upon further examination I saw a hairline crack that was causing the disk to de-laminate slightly on the inside. Once I pressed it down hard to
even it out a bit then the game would play properly but I'll have to get a new game soon as this "fix" won't last. Thanks again...

This happens because the playing disc is damaged, so the console cannot read the map correctly. You fix it by either taking care of your disc, or by downloading the disc to your hard-drive. To an extent if your connection is too slow it will sometimes not
be able to load the map on your console and you will get a failure to load. However, this rarely happens due to a connection.

This happens when your disc is so damaged that your console cannot read all of the maps properly. However, if you download an undamaged disc to your hard-drive, it will load from your hard-drive rather than the disc.