@ Florida.... Interesting question...
I was decompressing a DMS file to DF0: the other day whilst at the same time trying to create a new drawer on my HD. When creating the Drawer the floppy disk writing would stop until I'd completely finished creating the drawer and let go off the right mouse button.
This made me think twice about workbench being a truly multi tasking OS?? Which I'd always being led to believe it was....Does the floppy disk stop writing simply because of limited processing power and creating the drawer gets priority??