I've searched around and tried a few how-tos, but I really don't know how to make my USB drive use the MBR format instead of the UEFI format. I was able to create an MBR using DISKPART in Windows 7, but I'm using unetbootin to take make a bootable image from the ISO, and there's nothing in there about MBR vs UEFI so I suspect I'm just overwriting everything.
Is there a link or tool you can share to cluestick me a little about explicitly using MBR?