I recently upgraded my BIOS on my GA-z68xp-UD3 to the U1g UEFI BIOS. I also have a Mac, so I partitioned a thumb drive on it. That makes a FAT32 EFI parition. I put an EFI shell in this path, under the EFI partition: "/BOOT/BOOTx64.EFI". When I reboot and select my thumb drive, it just boots into Windows. Is this UEFI implementation truely UEFI, and if so, what am I missing to make it boot to the .EFI file?