Roy, Just as a followup, what did you use for the source for your DOS boot information to put on the Flash Drive? My last two PC motherboards were made by different companies, about five years apart, but both have the option to bring up a Boot menu during the BIOS boot sequence, if you press the F11 key. From that menu, I can boot into any drive on my computer, even my Flash Memory Card reader slots.
I'm sure that other mobo's have this feature too. It would be worthwhile investigating your own PC. Tropical Storm FAY is kicking our butts this afternoon, here in Central FL. The Shadow