So USB keys are getting larger and larger and I'm tired of having to copy over all my install discs or move them into individual folders and have to move them around when I want to flash a system. Is there any sort of manager that lets me pick a folder containing an unzipped ISO? So let's say I have xp, 7, 9, and a few distros of linux. I boot off usb and it gives me a menu to pick one.