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

     fdformat -- format	floppy disks

     fdformat [-q] [-v | -n] [-f capacity] [-c cyls] [-s secs] [-h heads]
	      [-r rate]	[-g gap3len] [-i intleave] [-S secshft]	[-F fillbyte]
	      [-t steps_per_track] device_name

     Fdformat formats a	floppy disk at device device_name.  Device_name	should
     be	a character device; it may be given either with	a full path name of a
     raw device	node for a floppy disk drive (e. g. /dev/rfd0),	or default
     name in an	abbreviated form (e. g.	fd0).  In the latter case, the name is
     constructed by prepending /dev/r and appending a .capacity	to the
     device_name.  Note	that any geometry constraints of the device node
     (minor device number) are meaningless, since they're overridden by

     The options are as	follows:

	   -q	       Suppress	any normal output from the command, and	don't
		       ask the user for	a confirmation whether to format the
		       floppy disk at device_name.

	   -f capacity
		       The normal way to specify the desired formatting	param-
		       eters.  Capacity	is the number of kilobytes to format.
		       Valid choices are 360, 720, 800,	820, 1200, 1440, 1480
		       or 1720.

	   -n	       Don't verify floppy after formatting.

	   -v	       Don't format, verify only.

	   -c cyls     Number of cylinders: 40 or 80.

	   -s secs     Number of sectors per track: 9, 10, 15 or 18.

	   -h heads    Number of floppy	heads: 1 or 2.

	   -r rate     Data rate: 250, 300 or 500 kbps.

	   -g gap3len  Gap length.

	   -i intleave
		       Interleave factor.

	   -S secshft  Sector size: 0=128, 1=256, 2=512	bytes.

	   -F fillbyte
		       Fill byte.

	   -t steps_per_track
		       Number of steps per track.  An alternate	method to
		       specify the geometry data to write to the floppy	disk.

     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 case you
     wish to create a file system on the medium, see the commands newfs(8) for
     an	ufs file system, or mkdosfs(1) 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(s) is being	formatted, then	a `V' while it's being
     verified, and if an error has been	detected, it will finally change to

     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).

     mkdosfs(1), fdc(4), newfs(8)

     Fdformat has been developed for 386BSD 0.1	and upgraded to	the new	fd(4)
     floppy disk driver. It later became part of the FreeBSD 1.1 system.

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

BSD			      September	16, 1993			   BSD


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