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Burn an ISO image to a USB drive on a Mac

  1. List the disks on your Mac
    $ diskutil list
  2. Unmount the USB drive
    $ diskutil unmountDisk /dev/disk6

    Change the /dev/disk6 to the name of your USB drive

  3. Burn the ISO image to the USB drive
    sudo dd if=~/downloads/ubuntu-20.04.3-desktop-amd64.iso of=/dev/disk6 bs=1m

    Change ~/downloads/ubuntu-20.04.3-desktop-amd64.iso and /dev/disk6 to your path and name of the USB drive

  4. Eject the USB drive
    $ diskutil eject /dev/disk6

    Change /dev/disk6 to the name of your USB drive