Halo: Reach’s co-op campaign mode cannot be played on Microsoft’s newer 4GB Xbox 360 Slim.
Tests by gaming website Nukezilla show that attempts to play Reach’s co-op campaign on the console are met with an error message reading, “One or more players do not have the hard drive required for this game type.”
This is a known issue, and one that neither Microsoft nor Bungie currently have a work-around for.
The game’s official FAQ reads:
“Q1: The error “One or more players do not have an Xbox 360 Hard Drive. An Xbox 360 Hard Drive is required to play co-op on Xbox LIVE or system link” occurs when I try to play. Why?
“A1: One or more players do not have a certified Xbox 360 hard drive attached to their Xbox 360 console. Some multiplayer aspects of Halo: Reach require an Xbox 360 certified hard drive.”
We've sought comment from Microsoft in New Zealand and will update this article when they reply.