OS Simulation instructions
The multimedia on Operating System introduces the OS Simulation at the end of the chapter. When you get there, do the following:

From Start menu, select run:
run ucsetup - installs some files on your H: drive
From Start menu, run cmd - starts a command window
In the command menu:
H: - gets you into your H: drive
cd ucomp\ossimu - gets into the OS Simulation folder
java OSSimulation - starts the OS simulation