I had a 500 gb Seagate Free agent drive and it no more detected my my macbook air neither by my windows pc nothing happens on screen whatsoever,not even disk utility..nothing just nothing. only thing that can tell the HDD is working is the light coming on the HDD and it vibrating like it did when it was in intact condition ...when plugged in via USB. I had lots and lots of important dta,can anyone here please help me? :/ I have a strong feeling this happened because I did not eject the disk,,stopped ejecting disk on macbook since like 1-2 months and this is probably the result. please ,please help, me ..