I have a slim 360 and was taking the hard drive out of it to use it on my rgh to copy some files from it, I was using it on my of also and it works perfect on them. But when i put it in my original Xbox slim it says to install an update but I can't cause there's no memory? And the hdd isn't showing in storage help, I can retrieve files from it so I can buy a new one if needed :/