NetBSD/sbin/mbrlabel/mbrlabel.8
lukem fbace08ced change behaviour of flags slightly:
-w	write in-core label if changed
-r	update on-disk as well as in-core label (with -w)
-f	force update (-w), even if there's been no change

-r behaviour suggested by matt green. what used to be `-f' is now `-wrf'
2000-12-27 04:22:11 +00:00

101 lines
3.3 KiB
Groff

.\" Copyright (C) 1998 Wolfgang Solfrank.
.\" Copyright (C) 1998 TooLs GmbH.
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.\" $NetBSD: mbrlabel.8,v 1.8 2000/12/27 04:22:11 lukem Exp $
.\"
.Dd December 27, 2000
.Dt MBRLABEL 8
.Os
.Sh NAME
.Nm mbrlabel
.Nd update disk label from MBR label(s)
.Sh SYNOPSIS
.Nm
.Op Fl fqrw
.Ar device
.Sh DESCRIPTION
.Nm
is used to update a
.Nx
disk label from the Master Boot Record (MBR) label(s) found
on disks that were previously used on DOS/Windows systems (or
other MBR using systems).
.Pp
.Nm
scans the MBR contained in the very first block of the disk,
then walks through every extended partition found and generating
additional partition entries for the disk from the MBRs found in
those extended partitions.
.Pp
Each MBR partition which does not have an equivalent partition in the
disk label (equivalent in having the same size and offset) is added to
the first free partition slot in the disk label. A free
partition slot is defined as one with an
.Dv fstype
of
.Sq Li unused
and a
.Dv size
of zero
.Pq Sq 0 .
If there are not enough free slots in the disk label, a warning
will be issued.
.Pp
The raw partition (typically partition
.Em c ,
but
.Em d
on i386 and some othe platforms) is left alone during this process.
.Pp
By default, the proposed changed disk label will be displayed and no
disk label update will occur.
.Pp
Available options:
.Pp
.Bl -tag -width indent
.It Fl f
Force an update, even if there has been no change.
.It Fl q
Performs operations in a quiet fashion.
.It Fl r
Update both the in-core and the on-disk label if the in-core label has
been changed.
.It Fl w
Update the on-disk label if it has been changed.
.El
.Pp
.Sh SEE ALSO
.Xr disklabel 8 ,
.Xr fdisk 8
.Sh HISTORY
The
.Nm
command appeared in
.Nx 1.4 .