The USB will need to be unmounted for you to perform any actions on it so keep that in mind. Once gparted is open, select your USB in the dropdown menu in the top right corner of the screen. The sudo command will prompt you for a password which should be the same as you login password. This will install and open a program called gparted which is a very simple to use yet very powerful piece of software that will allow you to reformat you USB. Sudo apt-get install gparted sudo gparted Since you said you are not very technical I'll give you some easy to follow instructions on how to do so.įirst off, open up a terminal ( ctrl + alt + t) and type the following commands: If you have nothing important on the drive that you are trying to recover, just reformat the drive.