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FDFORMAT(1)		  BSD General Commands Manual		   FDFORMAT(1)

     fdformat -- format	floppy disks

     fdformat [-F fill]	[-f fmt] [-s fmtstr] [-nqvy] device

     The fdformat utility formats a floppy disk	at device, where device	may
     either be given as	a full path name of a device node for a	floppy disk
     drive (e.g. /dev/fd0), or using an	abbreviated name that will be looked
     up	under /dev (e.g. "fd0").

     The options are as	follows:

     -F	fill	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".

     -f	fmt	Specify	the density settings for a fmt kilobyte	format,	as de-
		scribed	in fdcontrol(8).

     -s	fmtstr	Specify	the density settings using explicit parameters,	as de-
		scribed	in fdcontrol(8).

     -n		Do not verify floppy after formatting.

     -q		Suppress any normal output from	the command, and do not	ask
		the user for a confirmation whether to format the floppy disk
		at device.

     -v		Do not format, verify only.

     -y		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 auto-
     matic 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 confirma-
     tion 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.

     Unless -q has been	specified, a single letter is printed to standard out-
     put to inform the user about the progress of work.	 First,	an `F' is
     printed when the track is being formatted,	then a `V' while it is being
     verified, and if an error has been	detected, it will finally change to
     `E'.  Detailed status information (cylinder, head and sector number, and
     the exact cause of	the error) will	be printed for up to 10	errors after
     the entire	formatting process has completed.

     An	exit status of 0 is returned upon successful operation.	 Exit status 1
     is	returned on any	errors during floppy formatting, and an	exit status of
     2 reflects	invalid	arguments given	to the program (along with an appro-
     priate information	written	to diagnostic output).

     fdc(4), fdcontrol(8), newfs(8), newfs_msdos(8)

     The fdformat utility has been developed for 386BSD	0.1 and	upgraded to
     the new fdc(4) floppy disk	driver.	 It later became part of the
     FreeBSD 1.1 system.  Starting with	FreeBSD	5.0, it	uses the unified den-
     sity specifications as described in fdcontrol(8).

     The program has been contributed by Jorg Wunsch, Dresden, with changes by
     Serge Vakulenko and Andrey	A. Chernov, Moscow.

BSD			       December	25, 2001			   BSD


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