Steps

Ask your instructor for a bootable DOS 5.0 diskette.

Create an image of this diskette, using the VMDISKS utility.

Copy a DOS session object onto the desktop.

Change the "DOS_STARTUP Drive" setting for it.

Try to boot this image.

Create another DOS object, using the C:\ITSCLABS\IBMDOS33.VMB image.

Boot this one as well.

Study the CONFIG.SYS of these DOS diskettes.

Check things like HPFS, XMS, EMS, mouse, etc.