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.\"	$OpenBSD: fdformat.1,v 1.21 2018/09/17 15:44:16 jmc Exp $
.\"
.\" Copyright (C) 1993, 1994 by Joerg Wunsch, Dresden
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
.\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
.\" DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
.\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd $Mdocdate: September 17 2018 $
.Dt FDFORMAT 1
.Os
.Sh NAME
.Nm fdformat
.Nd format floppy disks
.Sh SYNOPSIS
.Nm fdformat
.Bk -words
.Op Fl nqv
.Op Fl c Ar cyls
.Op Fl F Ar fillbyte
.Op Fl g Ar gap3len
.Op Fl h Ar heads
.Op Fl i Ar intleave
.Op Fl r Ar rate
.Op Fl S Ar secshft
.Op Fl s Ar secs
.Op Fl t Ar steps_per_track
.Ar device_name
.Ek
.Sh DESCRIPTION
.Nm fdformat
formats a floppy disk at device
.Ar device_name .
.Ar 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
.Pq e.g., Pa /dev/rfd0c ,
or default name in an abbreviated form,
.Pq e.g., Em fd0 .
Note that any geometry constraints of the device node
.Pq minor device number
are meaningless, since they're overridden by
.Nm fdformat .
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl c Ar cyls
Number of cylinders
.Pq 40 or 80 .
.It Fl F Ar fillbyte
Use
.Ar fillbyte
as fill byte.
.It Fl g Ar gap3len
Length of gap at the end of any sector
.Pq Dq gap 3 .
.It Fl h Ar heads
Number of floppy heads
.Pq 1 or 2 .
.It Fl i Ar intleave
Sector interleave to be used.
.It Fl n
Don't verify floppy after formatting.
.It Fl q
Suppress any normal output from the command, and don't ask the
user for confirmation whether to format the floppy disk at
.Ar device_name .
.It Fl r Ar rate
Data transfer rate in kilobyte/sec
.Pq 250, 300, or 500 .
.It Fl S Ar secshft
Sector size code: 0 for 128, 1 for 256, and 2 for 512 byte
sectors.
.It Fl s Ar secs
Number of sectors per track
.Pq 9, 10, 15, or 18 .
.It Fl t Ar steps_per_track
Number of steps per track.
An alternate method to specify the
geometry data to write to the floppy disk.
.It Fl v
Don't format; verify only.
.El
.Pp
If the
.Fl q
flag has not been specified, the user is asked for confirmation
of the intended formatting process.
In order to continue, an answer of
.Dq y
must be given.
.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
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
.Dq F
is printed when the track(s) is being formatted, then a
.Dq V
while it's being verified, and if an error has been detected, it
will finally change to
.Dq E .
.Sh SEE ALSO
.Xr fdc 4
.Sh HISTORY
.Nm fdformat
was developed for 386BSD 0.1 and upgraded to the new
.Xr fdc 4
floppy disk driver.
It later became part of
.Fx 1.1 ,
and was then ported to
.Ox 1.2 .
.Sh AUTHORS
.An -nosplit
The program was contributed by
.An Joerg Wunsch ,
Dresden, with changes by
.An Serge Vakulenko
and
.An Andrew A. Chernov ,
Moscow.