Hi, I'm trying to upgrade from Mavericks 10.9.4 to the latest Yosemite Beta. I copied the Install Yosemite.app over Terminal to my USB Drive.
I have to delete every "AppleIntelHD" file in Single User Mode for it to boot to the installier / boot into OS X. However, it's not working, as the USB-Device is read-only.
Any tips? Or how should I copy Yosemite to the USB Device?
Thanks! :)
submitted by iCapa
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