You Cannot Format 720 KB Floppy Disks in Windows XP

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Article ID: 302113 - View products that this article applies to.
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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.


Article ID: 302113 - Last Review: December 1, 2007 - Revision: 1.5
  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Professional x64 Edition
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