Why is this happening? I've also attached a few screenshots of the USB drive. Then, I check System Preferences > Startup Disk, and the USB drive is not available there either. So, I force reboot again, while holding option, and my only choice is my main 'Macintosh HD' drive - it does not show the USB drive as an option. So, I force reboot, and it then throws a 'No bootable device - insert disk and press any key' error.Ħ. (interestingly, hitting a key does nothing on this screen).ĥ. System restarts, but throws 'Non-system disk - Press any key to reboot' error. I'm installing on a 32GB Sandisk Ultra Fit USB drive.Ĥ. iso from Digital River (file name is X17-58997.iso).Ģ. I downloaded a Windows 7 Home Premium 圆4. Used Boot Camp Assistant to 'Create a Windows 7 install disk' and 'Install Windows 7'.
However, I can't for the life of me get the Mac to recognize/boot from the USB drive. I have a MacBook Pro (Retina, 15-inch, Mid 2014) - Yosemite 10.10.1, and am using Boot Camp Assistant to install Windows 7 Home Premium.
