IBM 5150 Manual To Operations page 104

26
Type this:
n
27
The DOS prompt, A>, is displayed.
Remove the diskette from the drive.
With a felt tip pen, label and date your "DOS DISKETTE
BACK-UP."
Store the original DOS Diskette properly and use the
back-up in your daily operations. In the rest of this
chapter, we will still call the back-up diskette "your
DOS Diskette," because it is the same as your DOS
Diskette.
DOS 3-30