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Discuss set-guid - helps setting the partition GUID at the AppleTV 1 -; I wrote a script to help manage the GUID updates to the partition. This way, ...
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    Talking set-guid - helps setting the partition GUID

    I wrote a script to help manage the GUID updates to the partition. This way, it's easy to switch between the OS X and AppleTV-bootable GUIDs. The script is attached. Here's how to use it, for the third volume of disk1:
    • set AppleTV-bootable GUID: ./set-guid /dev/disk1 3
    • set OS X-accessible GUID: ./set-guid /dev/disk1 3 r
    • test the script and see the commands it'll run: ./set-guid /dev/disk1 3 --test
    • if you want to give it the start/end sectors directly: ./set-guid /dev/disk1 3 409640 20604520

    When you set the GUID to AppleTV-bootable, you'll see something like this:
    > ./set-guid /dev/disk1 3
    Disk /dev/disk1 unmounted
    gpt remove: /dev/disk1: 1 partition(s) removed
    Disk /dev/disk1 unmounted
    The script works for me - my AppleTV just booted OS X Server. Be careful - at this point the error checking in the script is not of the greatest quality.

    Let me know if you find any bugs. Enjoy.
    Attached Files



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