How to Linux dd a USB drive

The USB Drive needs to be unmounted. If the USB Drive is automatically mounted, unmount it.

Type dmesg to see what device to use to access the USB Drive.
Output Sample:
… [sdc] Attached SCSI removable device
This mean the USB drive is /dev/sdc

Erase the USB drive by running the following command:
# dd if=/dev/zero of=/dev/sdc bs=65536 count=10000

Extract a dd image to the USB Drive:
# dd if=Name_Of_The_File.dd of=/dev/sdc

dd a USB flash drive with an ISO file:
# umount /dev/sdX
# dd if=/DirectoryPath/ISOFile.iso of=/dev/sdX bs=4M && sync