ive been trying to use maps to play on halo reach but its says i require a hard drive to do this t doesnt allow me to go on my file share or anything else please help
You need a hard drive for your Xbox 360 console, not the 4GB built in one to use the file sharing features.
Is it one of them thumb drives like the one that can be inserted in one of the slots on the side of the console if not please explain what it looks like and how to install in your Xbox.