Formating a USB keyClassified in : Ubuntu - Tags : usb, key, drive
Formatting a USB drive is not always obvious on Linux !
You have 2 solutions with gui : gparted and gnome-disk.
And you may also type in commands from the command line (which was my only solution with a particular USB key).
The rest is on the article French version.
Ask for a translation, if you don't get it.