Use Diskpart in Windows 10 to clean USB drives

And all sorts of other flash based systems.  As you may know, flash can die off and leave parts of a partition dead.  Apparently Windows now has a built in tool to help clean them up.

http://www.howtogeek.com/235824/how-to-clean-a-flash-drive-sd-card-or-internal-drive-to-fix-partition-and-capacity-problems/