USB Create an ISO image DVD in the console , help.

Someone can teach you how to create a DVD ISO image to a USB. I want to do in the console, the ISO image is in the dumps, it's FreeBSD.
There are also iso image to memory. I want to learn on the console to create a DVD iso image on a USB.
 
There is no easy way to convert a bootable DVD image to a bootable USB pen image (if that is what you asking for). It maybe work like this:
  • mount the ISO image
  • create an empty USB pen image
  • create, format and mount partitions on the USB image
  • make the image bootable
  • copy all data from the mounted ISO image to the USB partitions
  • maybe you need to fix some script or configuration files on the USB
  • unmount both
  • burn the USB image to a USB drive

If you question is how to copy the USB image file to a USB drive, here it comes: dd if=(name of the image) of=(device of the usb stick), for example dd if=FreeBSD-10.0-RELEASE-amd64-memstick.img of=/dev/da0.

Be VERY careful when choosing the USB device name. dd can also write to (and destroy) your hard disk - it's just one different character on the command line.
 
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