Just unpacked this unit, formatted as fat32 on my PC and recorded some tracks. Viewed them on my PC and copied and saved them on the PC leaving the files in tact on the HD. Now when I reconnected the drive it has been scanning for 24 hours and still going. It started as soon as I plugged it in. What is up with that? Can it be stopped? Should I use the Master Fader 4 App to format? It is a 380GB Toshiba drive. I have a show tomorrow and hate to stop it in midstream. I have another drive but afraid it might do the same thing since it is a twin.