If the disk you want to format is a floppy disk, insert it into its drive. Otherwise, skip to step 2. 2. Double-click the My Computer icon, and then click the icon for the disk you want to format. Be sure not to double-click the disk icon, because you can't format a disk if it is open in My Computer or Windows NT Explorer. On the File menu, click Format.
Notes Formatting a disk removes all information from the disk.
You cannot format a disk if there are files open on that disk. For Help on an item, click at the top of the dialog box, and then click the item. Use the File Manager application found in the Main group. Select Format Disk under the Disk menu. Check the floppy disk for density rating.