Originally Posted by Burnout
One thing that annoyed me with Revelations was whenever you went into MP (Or Desmond's Journey) the disc would start spinning up again, not the end of the world but it makes installing to the HD less beneficial. =/
It's lazy programming on the part of the developers. Same thing happens in MW3.
They have separate teams working on the different parts (campaign, multiplayer) and then they just burn both parts on to the disc as separate "programs" linked to a main menu. So every time you start one, the disc spins cuz it thinks it's "starting" a new game. Better programming would've been to move that detection phase to the initial menu.