[src/trunk]: src/sbin/mbrlabel Moved from mbrlabel.8,v

[fvdl <fvdl%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c2e93d8d3800
branches:  trunk
changeset: 483665:c2e93d8d3800
user:      fvdl <fvdl%NetBSD.org@localhost>
date:      Wed Mar 15 11:55:33 2000 +0000

description:
Moved from mbrlabel.8,v

diffstat:

 sbin/mbrlabel/mbrlabel.8 |  93 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 93 insertions(+), 0 deletions(-)

diffs (97 lines):

diff -r 8f88975f925f -r c2e93d8d3800 sbin/mbrlabel/mbrlabel.8
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sbin/mbrlabel/mbrlabel.8  Wed Mar 15 11:55:33 2000 +0000
@@ -0,0 +1,93 @@
+.\" Copyright (C) 1998 Wolfgang Solfrank.
+.\" Copyright (C) 1998 TooLs GmbH.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"    This product includes software developed by TooLs GmbH.
+.\" 4. The name of TooLs GmbH may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+.\" PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+.\" OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+.\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+.\" ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\"    $NetBSD: mbrlabel.8,v 1.4 2000/03/15 11:55:34 fvdl Exp $
+.\"
+.Dd November 15, 1998
+.Dt MBRLABEL 8
+.Os
+.Sh NAME
+.Nm mbrlabel
+.Nd generate incore disklabel from MBR label(s)
+.Sh SYNOPSIS
+.Nm
+.Ar device
+.Sh DESCRIPTION
+.Nm
+is used to generate an incore disklabel from the MBR label(s) found
+on disks that were previously used on DOS/Windows systems (or
+other MBR using systems).
+.Pp
+The
+.Nm
+utility generates an incore label from the MBR contained in the very first
+block of the disk, then walking through every extended partition found
+and generating additional partition entries for the disk from the
+MBRs found in those extended partitions.
+The partitions are sequentially entered into the constructed disklabel
+as partitions
+.Em a , b
+and so on until no more MBR partitions are found or all available
+entries in the disklabel are used up.
+The raw partition (typically partition
+.Em c ,
+but
+.Em d
+on i386) is left alone during this process.
+The resulting disklabel is then placed as the incore disklabel for
+this disk.
+.Sh BUGS
+Due to the way disk drivers currently work in
+.Nx ,
+any incore disklabel is forgotten whenever the last partition of a
+disk is closed.
+Since typically you wouldn't have a partition open on a disk while
+running
+.Nm
+this lossage will most likely happen, if
+.Nm
+is used naively.
+.Pp
+The workaround until the disk drivers are fixed is to keep the
+raw partition open until you access the partition(s) of the
+disk via e.g.
+.Xr mount 8 .
+.Pp
+E.g. you could use
+.Dl sleep 100</dev/rsd0c &
+.Dl mbrlabel sd0
+.Dl mount -t msdos /dev/sd0a /msdos
+to mount a disk containing only one DOS partition.
+.Sh SEE ALSO
+.Xr disklabel 8
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Nx 1.4 .