Hi my name is John,
My friend has recently bought bf4 and doesn't have a hardrive. I told him he could use his old hardrive from his elite into his slim through a youtube video. He is very scared that he might get banned, but I have been using my elite hardrive in my slim since november of 2010. I haven't been banned yet because I have been using the official 20gb hardrive i bought from the microsoft store. Could you please clarrify that you won't get banned for system tampering because this is one of your own microsoft official hardwares and I have been on live for 3 years using the old hardrive.