My 3tb Sabrent external hard drive, shows up on my comp as a disk drive. although the icon displays it as a exernal hard drive. I used to have a good 2 tb full of info on it but its all gone, when i look at how much space it has, it says nothing is in it, all the numbers are at "0" When attempting to format it, i get a promt that says there is no disk in drive G: please insert a disk and try again. Can someone help me format my device please? I guess the name of my device as it shows on my comp is: ASMT 2105 USB DEVICE