Differential D13370 Diff 36206 usr.sbin/fdformat/fdformat.8

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usr.sbin/fdformat/fdformat.8

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				.\" $FreeBSD$
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				.Dd December 4, 2017
				.Dt FDFORMAT 8
				.Os
				.Sh NAME
				.Nm fdformat
				.Nd format floppy disks
				.Sh SYNOPSIS
				.Nm
				.Op Fl F Ar fill
				.Op Fl f Ar fmt
				.Op Fl s Ar fmtstr
				.Op Fl nqvy
				.Ar device
				.Sh DESCRIPTION
				The
				.Nm
				utility formats a floppy disk at
				.Ar device ,
				where
				.Ar device
				may either be given as a full path
				name of a device node for a floppy disk drive
				(e.g.\&
				.Pa /dev/fd0 ) ,
				or using an abbreviated name that will be looked up
				under
				.Pa /dev
				(e.g.\&
				.Dq Li fd0 ) .
				.Pp
				The options are as follows:
				.Bl -tag -width ".Fl s Ar fmtstr"
				.It Fl F Ar fill
				Use
				.Ar fill
				as the fill byte for newly formatted sectors.
				The
				.Ar fill
				argument
				must be a number in the range 0 through 255 using common C
				language notation.
				The default value is
				.Dq Li 0xf6 .
				.It Fl f Ar fmt
				Specify the density settings for a
				.Ar fmt
				kilobyte format, as described in
				.Xr fdcontrol 8 .
				.It Fl s Ar fmtstr
				Specify the density settings using explicit parameters, as
				described in
				.Xr fdcontrol 8 .
				.It Fl n
				Do not verify floppy after formatting.
				.It Fl q
				Suppress any normal output from the command, and do not ask the
				user for a confirmation whether to format the floppy disk at
				.Ar device .
				.It Fl v
				Do not format, verify only.
				.It Fl y
				Do not ask for confirmation whether to format the floppy disk but
				still report formatting status.
				.El
				.Pp
				For non-autoselecting subdevices, neither
				.Fl f Ar fmt
				nor
				.Fl s Ar fmtstr
				may be specified, since the preconfigured media density settings
				from the kernel driver will always be used.
				However, if
				.Ar device
				is a device with automatic media density selection (see
				.Xr fdc 4 ) ,
				both methods can be used to override the density settings for the
				newly formatted medium (without permanently changing the density
				settings of
				.Ar device ) .
				.Pp
				If the
				.Fl 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
				.Ql y
				must be given.
				.Pp
				Note that
				.Nm
				does only perform low-level formatting.
				In order to create
				a file system on the medium, see the commands
				.Xr newfs 8
				for a
				.Tn UFS
				file system, or
				.Xr newfs_msdos 8
				for an
				.Tn MS-DOS
				(FAT)
				file system.
				.Sh EXIT STATUS
				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
				appropriate information written to diagnostic output).
				.Sh DIAGNOSTICS
				Unless
				.Fl q
				has been specified, a single letter is printed to standard output
				to inform the user about the progress of work.
				First, an
				.Ql F
				is printed when the track is being formatted, then a
				.Ql V
				while it is being verified, and if an error has been detected, it
				will finally change to
				.Ql 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.
				.Sh SEE ALSO
				.Xr fdc 4 ,
				.Xr fdcontrol 8 ,
				.Xr newfs 8 ,
				.Xr newfs_msdos 8
				.Sh HISTORY
				The
				.Nm
				utility
				has been developed for
				.Bx 386 0.1
				and upgraded to the new
				.Xr fdc 4
				floppy disk driver.
				It later became part of the
				.Fx 1.1
				system.
				Starting with
				.Fx 5.0 ,
				it uses the unified density specifications as described in
				.Xr fdcontrol 8 .
				.Sh AUTHORS
				.An -nosplit
				The program has been contributed by
				.An J\(:org Wunsch ,
				Dresden, with changes by
				.An Serge Vakulenko
				and
				.An Andrey A. Chernov ,
				Moscow.