hello sir,..i'm in problem with my external usb 3.0 hardisk of 1 tb....in witch i hv created 4 partisions ...and now only 2 partisions are geting open insted of 4...and for the 2 partisions it shows me dilog box of to "format drive"......i hv open disk managment but while hard disk is connected the disk managment is not opening ....it's just loading and than not responding...i have very important deta in to that two drives please sujjest me what shood i do???....as soon as possible