1.\" $OpenBSD: mount_ffs.8,v 1.19 2020/04/23 21:28:09 jmc Exp $ 2.\" $NetBSD: mount_ffs.8,v 1.2 1996/02/05 06:33:47 jtc Exp $ 3.\" 4.\" Copyright (c) 1980, 1989, 1991, 1993 5.\" The Regents of the University of California. All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. Neither the name of the University nor the names of its contributors 16.\" may be used to endorse or promote products derived from this software 17.\" without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.\" @(#)mount.8 8.7 (Berkeley) 3/27/94 32.\" 33.Dd $Mdocdate: April 23 2020 $ 34.Dt MOUNT_FFS 8 35.Os 36.Sh NAME 37.Nm mount_ffs 38.Nd mount a Berkeley Fast File System 39.Sh SYNOPSIS 40.Nm mount_ffs 41.Op Fl o Ar options 42.Ar special node 43.Sh DESCRIPTION 44The 45.Nm 46command attaches the Berkeley Fast File System on the 47.Ar special 48device on to the file system tree at point 49.Ar node . 50.Pp 51This command is invoked by 52.Xr mount 8 53when using any of the following syntax: 54.Bd -ragged -offset 4n 55.Nm mount Op options 56.Ar special node 57.br 58.Nm mount Op options 59-t ffs 60.Ar special node 61.br 62.Ed 63.Pp 64The 65.Ar special 66device is either a 67.Xr disklabel 8 68UID (DUID) or an entry in 69.Pa /dev . 70If it is a DUID, 71it will be automatically mapped to the appropriate entry in 72.Pa /dev . 73In either case the partition must be present 74in the disklabel loaded from the device. 75The partition name is the last letter in the entry name. 76For example, /dev/sd0a and 3eb7f9da875cb9ee.a both refer to the 77.Sq a 78partition. 79.Pp 80This command is normally executed per file system by 81.Xr rc 8 82at boot time using the 83.Xr mount 8 84command. 85The options are as follows: 86.Bl -tag -width Ds 87.It Fl o Ar options 88Options are specified with a 89.Fl o 90flag followed by a comma separated string of options. 91See the 92.Xr mount 8 93man page for possible options and their meanings. 94.El 95.Sh SEE ALSO 96.Xr mount 2 , 97.Xr disklabel 5 , 98.Xr fstab 5 , 99.Xr disklabel 8 , 100.Xr mount 8 , 101.Xr umount 8 102.Sh HISTORY 103A 104.Nm 105command appeared in 106.Nx 1.1 . 107.Sh BUGS 108It is possible for a corrupted file system to cause a crash. 109