[Trisquel-users] How to wipe the flash drive

[b112327]

Normally when we format drives or delete files the system just removes the  
file descriptor pointing to that file, but the content of the files is still  
there and can be mostly recovered with some tools. Now, how to remove/format  
completely the files from the flash drive so that they cannot be recovered  
anymore? I remember that the latest Ubuntu had this future in the Disk  
Utility, I think it was called "safely format" or so.