Kreisen 3 8 6 X / X E - Manual (Page 86)

When the drive indicator light goes out, remove the MS-DOS
master diskette from the floppy disk drive. Insert a new, blank
diskette into the drive. This is the “TARGET” diskette.
Caution!
Make sure the target diskette is blank. If there is any previous
data on the diskette, it will be erased by the DISKCOPY
routine.
Press the SPACEBAR key. The drive will turn on, indicating
that the computer formatting the new diskette, then writing
the copied information onto it. After a few moments, the drive
will turn off, and the system will display:
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:
4-14 Using MS-DOS With Your Computer