Formatting a USB is a common operation in most computer systems and it comes in handy in a number of ways. For instance, you can format a USB drive if it gets infected with a virus, and data is corrupted or you want to change the file system as it is not compatible with your OS. Similarly, it can be helpful if you want to completely wipe off the old data so that you can fully use the storage space. So whatever the reason, you can easily format your USB device through different methods in a Debian operating system.