I decided to play Halo & Halo 2 again (to refresh myself on the story) and neither would play. My console recognizes the disc, but when i press A to play, it tells me;
The game couldn't start. Try downloading the game again.
I've follwed the directions listed at http://forums.xbox.com/xbox_forums/xbox_support/f/8/t/25.aspx and have still had no luck getting these titles to work.
A solution would be greatly appreciated:)