ODROID U2 – Flashing Images on Mac OS X

  1. Download the image of the OS you want to boot on your ODROID to the local disk of your Mac

  2. If the Image is compressed, unpack it (if it is in ‘.xz’ format you need a tool like The Unarchiver to be able to unpack it)

  3. Insert your SD card and check the currently mounted filesystems

*Note the name of the filesystem that Mac OS X assigned to the mounted SD card (in my case /dev/disk2s1)

  1. Unmount that filesystem so that you will be allowed to overwrite the disk:

  1. Using the device name of the filesystem work out the raw device name for the entire SD card, by omitting the final “s1” and replacing “disk” with “rdisk” (Important: you will lose all data on the hard drive on your computer if you get the wrong device name). Make sure the device name is the name of the whole SD card as described above, not just a partition of it (for example, rdisk3, not rdisk3s1. Similarly you might have another SD drive name/number like rdisk2 or rdisk4, etc. — recheck by using the df -h command both before & after you insert your SD card reader into your Mac if you have any doubts!):
    In my case, since the device name of the mounted filesystem is /dev/disk2s1 the entire SD card has the device name /dev/rdisk2

  2. Write the image to the card with the dd command, using the raw disk device name from above (read carefully the above step, to be sure you use the correct rdisk# here!)

*(note that dd will not output any information until there is an error or it is finished)

  1. When dd finished successfully it will display some information and the SD card will be re-mounted. You can now eject the card:

  1. Remove the SD card from the card reader and put it in the ODROID to boot your new OS image

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