1.\" Copyright (C) 1998 Wolfgang Solfrank. 2.\" Copyright (C) 1998 TooLs GmbH. 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 3. All advertising materials mentioning features or use of this software 14.\" must display the following acknowledgement: 15.\" This product includes software developed by TooLs GmbH. 16.\" 4. The name of TooLs GmbH may not be used to endorse or promote products 17.\" derived from this software without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 20.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22.\" IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 24.\" PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 25.\" OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 26.\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 27.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 28.\" ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29.\" 30.\" $NetBSD: mbrlabel.8,v 1.13 2002/01/24 23:35:10 fair Exp $ 31.\" 32.Dd May 1, 2001 33.Dt MBRLABEL 8 34.Os 35.Sh NAME 36.Nm mbrlabel 37.Nd update disk label from MBR label(s) 38.Sh SYNOPSIS 39.Nm 40.Op Fl fqrw 41.Ar device 42.Sh DESCRIPTION 43.Nm 44is used to update a 45.Nx 46disk label from the Master Boot Record (MBR) label(s) found 47on disks that were previously used on DOS/Windows systems (or 48other MBR using systems). 49.Pp 50.Nm 51scans the MBR contained in the very first block of the disk, 52then walks through every extended partition found and generating 53additional partition entries for the disk from the MBRs found in 54those extended partitions. 55.Pp 56Each MBR partition which does not have an equivalent partition in the 57disk label (equivalent in having the same size and offset) is added to 58the first free partition slot in the disk label. 59A free partition slot is defined as one with an 60.Dv fstype 61of 62.Sq Li unused 63and a 64.Dv size 65of zero 66.Pq Sq 0 . 67If there are not enough free slots in the disk label, a warning 68will be issued. 69.Pp 70The raw partition (typically partition 71.Em c , 72but 73.Em d 74on i386 and some other platforms) is left alone during this process. 75.Pp 76By default, the proposed changed disk label will be displayed and no 77disk label update will occur. 78.Pp 79Available options: 80.Pp 81.Bl -tag -width indent 82.It Fl f 83Force an update, even if there has been no change. 84.It Fl q 85Performs operations in a quiet fashion. 86.It Fl w 87Update the in-core label if it has been changed. 88.It Fl r 89In conjunction with 90.Fl w , 91also update the on-disk label. 92.El 93.Sh SEE ALSO 94.Xr disklabel 8 , 95.Xr fdisk 8 , 96.Xr mbr 8 97.Sh HISTORY 98The 99.Nm 100command appeared in 101.Nx 1.4 . 102