Kreisen 3 8 6 X / X E - Manual (Page 106)

Option Switches
To format 180K-byte single-sided, single-density diskettes in the
computer’s high capacity disk drive, enter the FORMAT
command using the /1 and /4 option switch:
The computer will proceed to format the diskette. Upon
completion, you will see this message:
And the following screen will be appeared if you press ENTER.
(If you want to have a volume label, type the characters and
enter.)
Enter N to return to the system prompt. Remove the diskette
from the drive and place it in its protective envelope.
5-6 Using Floppy Disks