The DR-DOS/OpenDOS Enhancement Project

Well, the USB support in the latest WIP is not meant to replace
existing USB drivers but only to interface with existing USB support
in the BIOS. Also, please note that it is still experimental. In
time it will probably improve.

Booting EDR-DOS from USB flash drives is not supported, yet - this
needs additional support in the bootloader code, it seems.

I plan to improve the USB support in the next WIP version, but since
I still have to pay the hospital a visit daily for the next 4 to 6
weeks, I don't know how long it will take.