I have a Seagate Back Up Slim Plus 2TB, I reformatted/reset my laptop back then, then I plugged in my external hard drive, and for some reason, all my files are gone, then the external hard drive takes too long to open, and when it did, you can't even use it. Like, it's literally nothing plus it slows down your computer. I have accepted the fact that I can't bring back my files and such, but it would be could if I can. I got my laptop fixed because it had problems when I reformatted/reset it so I plugged in my external hard drive again. I researched about it, turns out I need to format it? I tried the Quick Format option but it doesn't work. So I fully formatted the external hard drive but it doesn't do anything? Does it really take that long? How many hours/days does it take? Thank you!