How do I format a floppy diskette?
Formatting a floppy diskette in Microsoft Windows
To format a floppy diskette in Microsoft Windows, insert a blank diskette or a diskette you want to erase and follow the following steps.
Alternatively, you can format a floppy diskette from the Windows Command Prompt by following these steps.
Formatting a floppy diskette in MS-DOS
To format a floppy diskette at the MS-DOS prompt, insert a blank diskette or a diskette you want to erase and type the following command.
After pressing Enter, a prompt asking if you want to erase all information on the diskette appears. If you want to continue, type Y or Yes to continue.
If you need additional information about the MS-DOS format command or available format switches, see the format command page.