Simple question for anyone who already has access to the final game: If I install both discs to the hard drive can I play campaign with disc 2 in the drive? I already know that multiplayer can be launched from the campaign disc, but can campaign be launched from the multiplayer disc?
no
All you do with the 2nd disc is install it like Forza 4 you out the main disc in and there is an option that says install disc 2 then you click that and it says enter the 2nd disc then you put in the disc it installs then you take it out and everything is controlled on the 1st (main) disc you pretty much never touch the 2nd disc