IBM 5150 Manual To Operations page 138

10
When the copy has been made, you will see a message
similar to this:
Copy complete
Copy another? (YIN)
..............
The cursor is here.
11
Type:
n
and press the Enter key. The DOS prompt, A>, is
displayed.
12
Remove both diskettes.
Use a felt tip pen to label and date the back up diskette.
You may also want to write "Back-up" on the label to
remind yourself that this is a copy of another diskette.
DOS 3-64