- last post: 01.01.0001 12:00 AM PDT
M$ (I don't think that's Bungie's work.) would give you another one if you had a proof of purchase. Oh and if you would lose one of two discs, you would still have the other one, but if you'd lose the only disc, you wouldn't have anything left... And if they decided to put two discs in the box, I think they (M$) should create a special box with room for two discs to "click" in, and the manual on top of one of the discs.
On topic: I think there's room enough on one dvd to storage the campaign levels etc. & enough multiplayer maps... If not, the game would be really, really, really huge... (Please let there be 2 discs :-) )