Use fill as the fill byte for newly formatted sectors. fill must be a number in the range 0 through 255 using common C language notation. The default value is "0xf5".
Specify the density settings for a fmt kilobyte format, as described in fdcontrol(8).
Specify the density settings using explicit parameters, as described in fdcontrol(8).
Do not verify floppy after formatting.
Suppress any normal output from the command, and do not ask the user for a confirmation whether to format the floppy disk at device.
Do not format, verify only.
Do not ask for confirmation whether to format the floppy disk but still report formatting status.
For non-autoselecting subdevices, neither -f fmt nor -s fmtstr may be specified, since the preconfigured media density settings from the kernel driver will always be used. However, if device is a device with automatic media density selection (see fdc(4)), both methods can be used to override the density settings for the newly formatted medium (without permanently changing the density settings of device).
If the -q flag has not been specified, the user is asked for a confirmation of the intended formatting process. In order to continue, an answer of y must be given.
Note that fdformat does only perform low-level formatting. In order to create a file system on the medium, see the commands newfs(8) for a UFS file system, or newfs_msdos(8) for an MS-DOS (FAT) file system.