e6679c1a71
a capcity is given, no partitions are required. When no partitions are given, no scheme needs to be specified either. This makes it possible to create an entirely empty disk image. To add an empty partitioning table, specify the scheme. Bump the version to 20150222.
251 lines
7.5 KiB
Groff
251 lines
7.5 KiB
Groff
.\" Copyright (c) 2013, 2014 Juniper Networks, Inc.
|
|
.\" 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.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd February 22, 2015
|
|
.Dt MKIMG 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm mkimg
|
|
.Nd "utility to make disk images"
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl H Ar heads
|
|
.Op Fl P Ar blksz
|
|
.Op Fl S Ar secsz
|
|
.Op Fl T Ar tracksz
|
|
.Op Fl b Ar bootcode
|
|
.Op Fl c Ar capacity
|
|
.Op Fl f Ar format
|
|
.Op Fl o Ar outfile
|
|
.Op Fl v
|
|
.Op Fl y
|
|
.Op Fl s Ar scheme Op Fl p Ar partition ...
|
|
.Nm
|
|
.Ar --formats | --schemes | --version
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility creates a disk image from the raw partition contents specified with
|
|
the
|
|
.Ar partition
|
|
argument(s) and using the partitioning scheme specified with the
|
|
.Ar scheme
|
|
argument.
|
|
The disk image is written to
|
|
.Ar stdout
|
|
by default or the file specified with the
|
|
.Ar outfile
|
|
argument.
|
|
The image file is a raw disk image by default, but the format of the
|
|
image file can be specified with the
|
|
.Ar format
|
|
argument.
|
|
.Pp
|
|
The disk image can be made bootable by specifying the scheme-specific boot
|
|
block contents with the
|
|
.Ar bootcode
|
|
argument and,
|
|
depending on the scheme,
|
|
with a boot partition.
|
|
The contents of such a boot partition is provided like any other partition
|
|
and the
|
|
.Nm
|
|
utility does not treat it any differently from other partitions.
|
|
.Pp
|
|
Some partitioning schemes need a disk geometry and for those the
|
|
.Nm
|
|
utility accepts the
|
|
.Ar tracksz
|
|
and
|
|
.Ar heads
|
|
arguments, specifying the number of sectors per track and the number of
|
|
heads per cylinder (resp.)
|
|
.Pp
|
|
Both the logical and physical sector size can be specified and for that the
|
|
.Nm
|
|
utility
|
|
accepts the
|
|
.Ar secsz
|
|
and
|
|
.Ar blksz
|
|
arguments.
|
|
The
|
|
.Ar secsz
|
|
argument is used to specify the logical sector size.
|
|
This is the sector size reported by a disk when queried for its capacity.
|
|
Modern disks use a larger sector size internally,
|
|
referred to as block size by the
|
|
.Nm
|
|
utility and this can be specified by the
|
|
.Ar blksz
|
|
argument.
|
|
The
|
|
.Nm
|
|
utility will use the (physical) block size to determine the start of
|
|
partitions and to round the size of the disk image.
|
|
.Pp
|
|
The
|
|
.Fl c
|
|
option can be used to specify a minimal capacity for the disk image.
|
|
Use this option without the
|
|
.Fl s
|
|
and
|
|
.Fl p
|
|
options to create an empty disk image with the given (virtual) size.
|
|
An empty partition table can be written to the disk when specifying a
|
|
partitioning scheme with the
|
|
.Fl s
|
|
option, but without specifying any partitions.
|
|
When the size required to for all the partitions is larger than the
|
|
given capacity, then the disk image will be larger than the capacity
|
|
given.
|
|
.Pp
|
|
The
|
|
.Fl v
|
|
option increases the level of output that the
|
|
.Nm
|
|
utility prints.
|
|
.Pp
|
|
The
|
|
.Fl y
|
|
option is used for testing purposes only and is not to be used in production.
|
|
When present, the
|
|
.Nm
|
|
utility will generate predictable values for Universally Unique Identifiers
|
|
(UUIDs) and time stamps so that consecutive runs of the
|
|
.Nm
|
|
utility will create images that are identical.
|
|
.Pp
|
|
A set of long options exist to query about the
|
|
.Nm
|
|
utilty itself.
|
|
Options in this set should be given by themselves because the
|
|
.Nm
|
|
utility exits immediately after providing the requested information.
|
|
The version of the
|
|
.Nm
|
|
utility is printed when the
|
|
.Ar --version
|
|
option is given.
|
|
The list of supported output formats is printed when the
|
|
.Ar --formats
|
|
option is given and the list of supported partitioning schemes is printed
|
|
when the
|
|
.Ar --schemes
|
|
option is given.
|
|
Both the format and scheme lists a space-separated lists for easy handling
|
|
in scripts.
|
|
.Pp
|
|
For a more descriptive list of supported partitioning schemes or supported
|
|
output format, or for a detailed description of how to specify partitions,
|
|
run the
|
|
.Nm
|
|
utility without any arguments.
|
|
This will print a usage message with all the necessary details.
|
|
.Sh ENVIRONMENT
|
|
.Bl -tag -width "TMPDIR" -compact
|
|
.It Ev TMPDIR
|
|
Directory to put temporary files in; default is
|
|
.Pa /tmp .
|
|
.El
|
|
.Sh EXAMPLES
|
|
To create a bootable disk image that is partitioned using the GPT scheme and
|
|
containing a root file system that was previously created using
|
|
.Xr makefs
|
|
and also containing a swap partition, run the
|
|
.Nm
|
|
utility as follows:
|
|
.Dl % mkimg -s gpt -b /boot/pmbr -p freebsd-boot:=/boot/gptboot \
|
|
-p freebsd-ufs:=root-file-system.ufs -p freebsd-swap::1G \
|
|
-o gpt.img
|
|
.Pp
|
|
The command line given above results in a raw image file.
|
|
This is because no output format was given.
|
|
To create a VMDK image for example, add the
|
|
.Fl f Ar vmdk
|
|
argument to the
|
|
.Nm
|
|
utility and name the output file accordingly.
|
|
.Pp
|
|
A nested partitioning scheme is created by running the
|
|
.Nm
|
|
utility twice.
|
|
The output of the first will be fed as the contents of a partition to the
|
|
second.
|
|
This can be done using a temporary file, like so:
|
|
.Dl % mkimg -s bsd -b /boot/boot -p freebsd-ufs:=root-file-system.ufs \
|
|
-p freebsd-swap::1G -o /tmp/bsd.img
|
|
.Dl % mkimg -s mbr -b /boot/mbr -p freebsd:=/tmp/bsd.img -o mbr-bsd.img
|
|
.Pp
|
|
Alternatively, the
|
|
.Nm
|
|
utility can be run in a cascaded fashion, whereby the output of the
|
|
first is fed directly into the second.
|
|
To do this, run the
|
|
.Nm
|
|
utility as follows:
|
|
.Dl % mkimg -s mbr -b /boot/mbr -p freebsd:-'mkimg -s bsd -b /boot/boot \
|
|
-p freebsd-ufs:=root-file-system.ufs -p freebsd-swap::1G' -o mbr-bsd.img
|
|
.Pp
|
|
To accomodate the need to have partitions named or numbered in a certain
|
|
way, the
|
|
.Nm
|
|
utility allows for the specification of empty partitions.
|
|
For example, to create an image that is compatible with partition layouts
|
|
found in
|
|
.Pa /etc/disktab ,
|
|
the 'd' partition often needs to be skipped.
|
|
This is accomplished by inserting an unused partition after the first 2
|
|
partition specifications.
|
|
It is worth noting at this time that the BSD scheme will automatically
|
|
skip the 'c' partition by virtue of it referring to the entire disk.
|
|
To create an image that is compatible with the qp120at disk, use the
|
|
.Nm
|
|
utility as follows:
|
|
.Dl % mkimg -s bsd -b /boot/boot -p freebsd-ufs:=root-file-system.ufs \
|
|
-p freebsd-swap::20M -p- -p- -p- -p- -p freebsd-ufs:=usr-file-system.ufs \
|
|
-o bsd.img
|
|
.Pp
|
|
For partitioning schemes that feature partition labels, the
|
|
.Nm
|
|
utility supports assigning labels to the partitions specified.
|
|
In the following example the file system partition is labeled as 'backup':
|
|
.Dl % mkimg -s gpt -p freebsd-ufs/backup:=file-system.ufs -o gpt.img
|
|
.Sh SEE ALSO
|
|
.Xr gpart 8 ,
|
|
.Xr makefs 8 ,
|
|
.Xr mdconfig 8 ,
|
|
.Xr newfs 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
utility first appeared in
|
|
.Fx 10.1 .
|
|
.Sh AUTHORS
|
|
The
|
|
.Nm
|
|
utility and manpage were written by Marcel Moolenaar <marcelm@juniper.net>
|