Kreisen 3 8 6 X / X E - Manual (Page 90)

The contents of the disk are being read into your computer’s
memory. After a few moments, the following message will
appear:
For now, type N. The system prompt will reappear. To compare
the backup diskette with the original, you will use the
DISKCOMP command. Enter the command at the system
prompt:
The computer will respond:
Since both diskettes are already in their correct locations, press
the SPACE BAR key. While the comparisons are being made,
the computer will display:
4-18 Using MS-DOS With Your Computer