[Coco] Level3 and Drivewire may not work

[Robert Gault]

Having a Level3 boot disk that works with my Coco3, MESS, and VCC, I tried 
changing the contents of OS9Boot to see if Level3 worked with Drivewire. You can 
use rb1773 instead of cc3disk so why not use rbdw and dwio?

Well the new OS9Boot, with rbdw, dwio, and /X#, booted Level3 and floppy access 
still worked. However the system crashed when trying to read /X0. Doesn't look good.

Robert