1.\" $NetBSD: fsck_msdos.8,v 1.9 1997/10/17 11:19:58 ws Exp $ 2.\" 3.\" Copyright (C) 1995 Wolfgang Solfrank 4.\" Copyright (c) 1995 Martin Husemann 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by Martin Husemann 17.\" and Wolfgang Solfrank. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 23.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25.\" IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32.\" 33.\" $FreeBSD$ 34.\" 35.Dd August 13, 1995 36.Dt FSCK_MSDOSFS 8 37.Os 38.Sh NAME 39.Nm fsck_msdosfs 40.Nd DOS/Windows (FAT) file system consistency checker 41.Sh SYNOPSIS 42.Nm 43.Fl p 44.Op Fl f 45.Ar filesystem ... 46.Nm 47.Op Fl ny 48.Ar filesystem ... 49.Sh DESCRIPTION 50The 51.Nm 52utility verifies and repairs 53.Tn FAT 54file systems (more commonly known 55as 56.Tn DOS 57file systems). 58.Pp 59The first form of 60.Nm 61preens the specified file systems. 62It is normally started by 63.Xr fsck 8 64run from 65.Pa /etc/rc 66during automatic reboot, when a FAT file system is detected. 67When preening file systems, 68.Nm 69will fix common inconsistencies non-interactively. 70If more serious problems are found, 71.Nm 72does not try to fix them, indicates that it was not 73successful, and exits. 74.Pp 75The second form of 76.Nm 77checks the specified file systems and tries to repair all 78detected inconsistencies, requesting confirmation before 79making any changes. 80.Pp 81The options are as follows: 82.Bl -tag -width indent 83.It Fl F 84Compatibility with the wrapper 85.Xr fsck 8 86which seeks to determine whether the file system needs to be cleaned 87immediately in foreground, or if its cleaning can be deferred to background. 88FAT (MS-DOS) file systems must always be cleaned in the foreground. 89A non-zero exit code is always returned for this option. 90.It Fl f 91Force 92.Nm 93to check 94.Dq clean 95file systems when preening. 96.It Fl n 97Causes 98.Nm 99to assume 100.Dq Li no 101as the answer to all operator 102questions, except 103.Dq Li CONTINUE? . 104.It Fl p 105Preen the specified file systems. 106.It Fl y 107Causes 108.Nm 109to assume 110.Dq Li yes 111as the answer to all operator questions. 112.El 113.Sh SEE ALSO 114.Xr fsck 8 , 115.Xr fsck_ffs 8 , 116.Xr mount_msdosfs 8 117.Sh HISTORY 118The 119.Nm 120utility first appeared in 121.Fx 4.4 . 122.Sh BUGS 123The 124.Nm 125utility is 126.Ud . 127