This is kind of a Windows 10 problem and kind of not. I installed the Windows Media Creation Tool on a 256GB flash drive so I could reinstall Windows 10 when I got a new SSD, now I don't need it on there and would like to use the flash drive for other things, so I reformatted the flash drive, but it is now showing that the drive is only 39Gb, what the heck is going on???? How do I get it back to 256GB? The flash drive is a SanDisk 3.0 256GB.