The title covers most of my question. I am relatively new to the Mac world, and came across Bootcamp, which can dual-boot Windows, which seems pretty cool. I have read through many Bootcamp guides, and know that a USB drive must be used (my new Mac does not have a CD/DVD drive). I do not have any USB drives at the moment that I want to format, and I would like to know if there is a way to do it without a USB drive. I know that it may be harder or impossible to do it without a USB drive, and I can back up my USB, but I would like to be able to boot Windows without a USB drive. Alternate question: if I do format my flash drive (64 gb), will I be able to store other files on it, or will it only work with my Windows OS?