However, when you use ‘dd’ on an USB flash drive, it will destroy this layout and will create a new partition layout. The command that is used to create that is called ‘dd’.īy default, almost all USB flash drives use a common partition layout (which of course can be changed) that consists of a single, primary partition occupying the whole space. In GNU/Linux, you can create a bootable USB flash drive using an ISO disc image of another distribution, by using the command-line.