Sun Microsystems Enterprise 250 Owner's Manual page 253

If the server is set up without a local console, you need to set up a console on it in
order to issue software commands; see:
4 "About Setting Up a Console" on page 49
If the diskette is write-protected, you have to remove the write protection; see:
4 "How to Allow Writing to a Diskette" on page 215
What to Do
1. Insert a diskette into the diskette drive.
2. From the console device, enter the fdformat command.
Type the appropriate command, as listed for your diskette. It takes a minute or
two for the system to format the diskette.
TABLE 11–2
Diskette Density
High Density (HD)
Medium Density (MD)
Low Density (2DD)
You can now write to and read from the diskette.
Storage
Capacity
(Formatted) Command
1.44 Mbytes
fdformat -U
1.2 Mbytes
fdformat -mU
720 Kbytes
fdformat -lU
219
Using Storage Devices