Owners of 4Gb Xbox 360 are currently unable to play co-op in Bungie's recently released Halo Reach due to issues with memory capacity for caching levels and other game code.
This is no rumour as the Nukezilla
site refers to the top question on the official Xbox page
for the game which has the following Q & A:
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.
Xbox Slim owners without the hard drive will have to sit pretty until Microsoft finds an official fix for the issue as this means gamers who purchased the title on release are missing out a part of the game they should be able to access as a default.
Hopefully Microsoft will 'reach' out to its fans soon enough (sorry, it had to be said).