120 lines
3.2 KiB
Groff
120 lines
3.2 KiB
Groff
.\" $NetBSD: fsck_msdos.8,v 1.18 2016/09/11 04:12:08 sevan Exp $
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.\"
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.\" Copyright (C) 1995 Wolfgang Solfrank
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.\" Copyright (c) 1995 Martin Husemann
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\"
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.Dd September 11, 2016
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.Dt FSCK_MSDOS 8
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.Os
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.Sh NAME
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.Nm fsck_msdos
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.Nd DOS/Windows (FAT) filesystem consistency checker
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.Sh SYNOPSIS
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.Nm
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.Fl p
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.Op Fl f
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.Ar filesystem ...
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.Nm
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.Op Fl fny
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.Op Fl x Ar snap-backup
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.Ar filesystem ...
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.Sh DESCRIPTION
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The
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.Nm
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utility verifies and repairs
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.Tn FAT
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filesystems (more commonly known
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as
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.Tn DOS
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filesystems).
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.Pp
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The first form of
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.Nm
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preens the specified filesystems.
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It is normally started by
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.Xr fsck 8
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run from
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.Pa /etc/rc
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during automatic reboot, when a FAT filesystem is detected.
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When preening file systems,
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.Nm
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will fix common inconsistencies non-interactively.
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If more serious problems are found,
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.Nm
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does not try to fix them, indicates that it was not
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successful, and exits.
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.Pp
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The second form of
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.Nm
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checks the specified file systems and tries to repair all
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detected inconsistencies, requesting confirmation before
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making any changes.
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.Pp
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The options are as follows:
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.Bl -tag -width XxXsnapXbackupXX
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.It Fl f
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This option is ignored by
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.Nm ,
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and is present only for compatibility with programs that
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check other file system types for consistency, such as
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.Xr fsck_ffs 8 .
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.It Fl n
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Causes
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.Nm
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to assume no as the answer to all operator
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questions, except
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.Dq CONTINUE? .
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.It Fl p
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Preen the specified filesystems.
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.It Fl x Ar snap-backup
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Use a snapshot with
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.Ar snap-backup
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as backup to check a read-write mounted filesystem.
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Must be used with
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.Fl n .
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See
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.Xr fss 4
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for more details.
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The point is to check an internally-consistent version of the
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filesystem to find out if it is damaged; on failure one should unmount
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the filesystem and repair it.
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.It Fl y
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Causes
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.Nm
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to assume yes as the answer to all operator questions.
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.El
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.Sh SEE ALSO
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.Xr fss 4 ,
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.Xr fsck 8 ,
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.Xr fsck_ffs 8 ,
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.Xr mount_msdos 8
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.Sh HISTORY
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A
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.Nm
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utility appeared in
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.Nx 1.2 .
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.Sh BUGS
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.Nm
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is still under construction.
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