This article was previously published under Q302113
The option to format a floppy disk to the capacity of 720 kilobytes (KB) is missing in the Format 3 1/2 Floppy dialog box. Attempting to format a floppy disk to a capacity of 720 KB by using the format command-line utility produces the following error:
Invalid parameter /F:720
The ability to format floppy disks to a capacity of 720 KB is not present in Windows XP. Windows XP only supports the formatting of floppies to 1.44 megabytes (MB).
This behavior is by design.
720 KB formatted floppies can still be read by Windows XP.