I've had this tv about 8 months now and have never got round to buying a hard drive for it for recording tv. I've been using a 4gb USB stick which is handy but only takes about 2 hours of TV, I've bought bigger usb sticks 8gb and 16gb but all but the original 4gb one refuse to work. What I need to know is do I need a mains powered hard drive or will a USB powered one work? What's the minimum and maximum size I need for it to work as I've heard there are limits. Can someone who has one in use recommend a specific one. I don't need massive amounts of storage. Any help would be fantastic, thanks