I have created a bootable USB flash drive to install ubuntu on my mac. Is it possible to restore that drive and clear it of everything, so that I can use it to store data again. It is quite a large capacity USB, so I would like to use it further. I have tried to drag the files into my trash, but it doesn't allow me too. If this is of any help, I used this tutorial on the ubuntu website to create the bootable drive via terminal: Ubuntu Server Guide ^ Click USB, Mac option. Thank you for any help.