Gparted cannot unmount USB

I recently bought в new USB, anyway when first plug it in i get this ошибка.

Which is clearly wrong эксперт this comp - never seen this USB before. And it does end up mounting anyway.

It шоу up in gparted эксперт dev/sdc but when i type in "df" into конечный it says its sdc1? When i try to unmount with gparted it does nothing.

With the command

sudo umount -v /media/will/2086-84A4

which returns

/dev/sdc1 has been unmounted

but then it proceeds to mount anyway.

when i unmount using nautilus is disappears from gparted and "df" return.

Any ты разрабатываешь or сходный threads (cant find anything сходный?)

Thanks to anyone helping out в novice.