You should be able to write the ISO directly to a USB stick with dd (ie: "dd if=image.iso of=/dev/sdc bs=1M") and it should boot fine on your EFI system. I suspect usb-creator did nasty things to it.
You should be able to write the ISO directly to a USB stick with dd (ie: "dd if=image.iso of=/dev/sdc bs=1M") and it should boot fine on your EFI system. I suspect usb-creator did nasty things to it.