MOUNT RAD:
COPY SYS: RAD: ALL QUIET
ASSIGN SYS: RAD:
If you create an LZX archive of your sys: partition, you can change the second line to unpack the archive to RAD: as it's a darn site quicker than copying the whole filesystem contents.
You can have multiple OS "personalities" this way and create a menu that runs from S:s-s on cold boot to choose which one you want.