HALO REACH REQUIRES HARD DRIVE TO PLAY CO-OP

One of the driving factors in the success of the Halo franchise is the addicting multi-player and co-op modes.  Halo Reach, the newest in the franchise, is requiring the player to have the optional hard drive for the 4GB Xbox 360 in order to play the co-op mode.  This "bug" affects only the 4GB version of the popular gaming console and has been reported to affect both the local play as well as that across Xbox Live.

Microsoft is aware of this issue and is "quickly working to resolve it."  Standard multi-player mode is unaffected by this issue. [Engadget]