Epson 10020 - Manual (Page 86)

The formatted diskette is now ready to store data. See the
MS-DOS Reference Manual for information about options you
can use with the FORMAT command.
Formatting Diskettes on the Apex 100\20
1. If necessary, type C : to log onto drive C.
2. When you see the C> prompt, type the following and press
Enter:
FORMAT A:
You see this prompt:
Insert new diskette for drive A:
and strike ENTER when ready
3. insert the diskette you want to format in drive A and press
Enter to start formatting.
4. When the diskette is formatted, you see a message similar
to this:
Format complete
362496 bytes total disk space
362496 bytes available on disk
Format another (Y/N)?
At this point, you can either format another diskette by
pressing Y and Enter, or return to the MS-DOS command
prompt by pressing N and Enter.
The formatted diskette is now ready to store data. See the
MS-DOS Reference Manual for information about options you
can use with the FORMAT command.
Using MS-DOS With Your Computer 3-27