.\" $NetBSD: fsck_msdos.8,v 1.9 1997/10/17 11:19:58 ws Exp $
.\" $FreeBSD$
.\"
.\" Copyright (C) 1995 Wolfgang Solfrank
.\" Copyright (c) 1995 Martin Husemann
.\"
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.\" This product includes software developed by Martin Husemann
.\" and Wolfgang Solfrank.
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.Dd August 13, 1995
.Dt FSCK_MSDOSFS 8
.Os
.Sh NAME
.Nm fsck_msdosfs
.Nd DOS/Windows (FAT) filesystem consistency checker
.Sh SYNOPSIS
.Nm
.Fl p
.Op Fl f
.Ar filesystem ...
.Nm
.Op Fl fny
.Ar filesystem ...
.Sh DESCRIPTION
The
.Nm
utility verifies and repairs
.Tn FAT
filesystems (more commonly known
as
.Tn DOS
filesystems).
.Pp
The first form of
.Nm
preens the specified filesystems.
It is normally started by
.Xr fsck 8
run from
.Pa /etc/rc
during automatic reboot, when a FAT filesystem is detected.
When preening filesystems,
.Nm
will fix common inconsistencies non-interactively.
If more serious problems are found,
.Nm
does not try to fix them, indicates that it was not
successful, and exits.
.Pp
The second form of
.Nm
checks the specified filesystems and tries to repair all
detected inconsistencies, requesting confirmation before
making any changes.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl F
Compatibility with the wrapper
.Xr fsck 8
which seeks to determine whether the filesystem needs to be cleaned
immediately in foreground, or if its cleaning can be deferred to background.
FAT (MS-DOS) filesystems must always be cleaned in the foreground.
A non-zero exit code is always returned for this option.
.It Fl f
This option is ignored by
.Nm ,
and is present only for compatibility with programs that
check other filesystem types for consistency, such as
.Xr fsck_ffs 8 .
.It Fl n
Causes
.Nm
to assume
.Dq Li no
as the answer to all operator
questions, except
.Dq Li CONTINUE? .
.It Fl p
Preen the specified filesystems.
.It Fl y
Causes
.Nm
to assume
.Dq Li yes
as the answer to all operator questions.
.El
.Sh SEE ALSO
.Xr fsck 8 ,
.Xr fsck_ffs 8 ,
.Xr mount_msdos 8
.Sh BUGS
The
.Nm
utility is still under construction.
.Sh HISTORY
The
.Nm
utility first appeared in
.Fx 4.4 .
