I’m not sure what the problem is. The usb is a blank usb I haven’t tried before. Basically a Kingston Traveler and it should open when I click the icon in Thunar but it won’t. Trying lsblk -f in terminal doesn’t detect it either.
Try a partition manager, such as Gparted or KDE Partition Manager.
Also could look at the drive with Gnome disk utility.
Pudge