12 March 2017

Mac: Create Bootable SD from ISO

Using Ubuntu as an example: https://www.ubuntu.com/download downloaded to Downloads folder.

Download Ubuntu and Create img file

Create Bootable SD from img file

  • Disk Utility: Erase the SD Card (not sub partition) select:
      Name: (Optional) e.g. UBUNTU
      Format: MS-DOS (FAT)
      Scheme: GUID Partition Map
  • Unmount any partitions, but leave the drive itself mounted
  • Terminal: cd to location of downloaded img
    cd Downloads (ls to check)
  • List disks:
    sudo diskutil list
  • Note identifier of SD card found by disk size e.g. disk3s2
  • Unmount:
    sudo umount disk3 && sudo umount disk3s1 && sudo umount disk3s2
  • Copy image across:
    sudo dd bs=4m if=ubuntu-16.04.2-desktop-amd64.img of=/dev/disk3
  • WAIT: It could take around 20 minutes with little indication it's happening.
Now try your boot: Reboot and hold down Alt/Option key to select the boot disk.

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