What up THS'cats -
I had a USB thumb drive that I was having problems with.
When I plugged it in, Windows reconised there was a drive and the drive would show up in Explorer. However, when I tried to access it, I was prompter to format. In the format dialog box where it shows the drives size - it was blanked out. When I tried to format it, it error'd and wouldnt let me format it.
Same thing when using Disk Manager.
This has happened before, so typically I just plug the USB into a linux box and format it using Gparted. Well, linux could see the drive just fine, but Windows still couldn't format or recognize the drive size.
This problem I encountered was due to the difference between MBR and GPT - I even had to install a special program in linux called Fixparts (http://www.rodsbooks.com/fixparts/
) in order to repair it.
So to fix this issue I had to use a Windows program called Diskpart.exe and here is what I did to fix it:
Press WinKEY + X - this opens special start menu items
Click on Command Prompt (Admin)
Type in command promt:
select disk X
; Where X is your USB drive
create partition primary
format fs=fat32 quick
or format fs=ntfs quick
Hope this helps someone in the future.