Create a bootable USB disk with the dd command under ubuntu

Under ubuntu, you can use the dd command to make a U disk boot disk.

1. Execute sudo dd if=ISO file location of=U disk location
Note: There is no number in the U disk path. For example, the path of the U disk seen by executing the df command is /dev/sdb1, but the value of the U disk path in of= should be /dev/sdb.