Hi there all. I'm using a MacPro Early 2009 with an AMD Radeon 7970 GPU. I've not flashed the GPU with the Mac EFI, so the mac doesn't display anything during startup until it loads the login screen. This is totally fine and useable. My problem now is that I'm trying to install Windows 8 to a bootcamp partition. When I go through the bootcamp assistant, I get the good old 'No Bootable Device' error, so following tips from other people, I've tried rebooting my mac and holding down the option key so that I can manually select the device I want to boot from. Which takes me back to my first issue - I can't actually see the screen, so can't select the boot device in this manner because my GPU isn't supported natively by my mac. Does anyone know of a workaround for this? I feel a little stumped. It'd be particularly good if there was some way of setting my machine to boot from USB before I reboot. Any ideas?