IBM 5150 Manual To Operations page 102

21
This message is displayed:
Insert first diskette in drive A
Strike any key when ready
22
Press a key.
Your DOS Diskette back-up is one of the diskettes you
want to compare and it is already in the drive.
23
Now this message appears:
Insert second diskette in drive A
Strike any key when ready
Do this:
23A
Remove the back-up diskette.
23B
Insert the DOS Diskette.
23C
Press a key.
DOS 3-28