After some time we show a tutorial how can recover all an USB drives (flash drive). There are situations where, for example, we have one Stick 32GB, but from which we see a total volume of only a few MB. This scenario I suffered from Windows 10, with a flash drive Kingston DataTraveler by 32 GB, of which I saw only 120MB available.
I opened Command Prompt (with administrator privileges), I followed the set of commands "DISKPART"To erase completely the active partition, but after the last command line: DELETE PARTITION, I have encountered the error: Can not delete a protected partition Without the force protected parameter set.
Apparently, this is a measure of additional protectionTo be sure that we remove it entirely from the flash drive space.
Once this error occurs, the command line is executed: DELETE PARTITION OVERRIDE. This command will completely erase the data on the flash drive, and the volume will return to normal.
I do not know if this problem is typical of the operating system Windows 10 or is also valid for versions older than Windows, but I know for sure it solves the problem of the "disappeared" space on a flash drive.