I have a 250GB hard drive for my XBOX 360s. I have I was having trouble with my concole restarting itself whenever I touched the controller. I unplugged everything and removed the three extra storage device I had and it worked fine, I replaced each one and when I got to the hard drive, the console restarts continually. I have only ever downloaded content directly from Xbox Live, and have never had anything pirated pass through my house let alone my console.
Oh dear, what could the matter be? I have a bunch of games on it that I am loathe to download again.