Insert a floppy disk into your computer's floppy drive.
Open My Computer, and then click the floppy disk drive to
select it.
On the File menu, point to the name of the floppy drive,
and then click Format.
Under Format options, click Create an MS-DOS startup
disk.
Click Start.
Important
Creating an MS-DOS startup disk erases all information on
the floppy disk.
Notes
To open My Computer, click Start, and then click My
Computer.
The MS-DOS startup disk only allows the system to boot
into an MS-DOS prompt. The disk contains no additional
tools.