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|
dnl $OpenBSD: install,v 1.10 2010/03/05 14:25:42 otto Exp $
OpenBSDInstallPrelude
Booting the installation media:
The easiest way to boot into the OpenBSD installer is to copy the miniroot
image to a USB stick using dd(1) and boot bsd.rd from the PMON prompt:
PMON> boot -k /dev/fs/ext2@usb0/bsd.rd
on Lemote systems, and
PMON> load /dev/fs/ext2@usb0/bsd.rd
PMON> g
on Gdium systems.
Another way to boot into the OpenBSD installer is to copy the bsd.rd
installation kernel to the main Linux partition, and boot from it.
Assuming the installation kernel has been copied to /boot/bsd.rd on the
Linux system, at the PMON prompt, enter
PMON> boot -k /dev/fs/ext2@wd0/boot/bsd.rd
on Lemote systems, and
PMON> load /dev/fs/ext2@usbg0/boot/bsd.rd
PMON> g
on Gdium systems.
dnl
dnl Alternatively, if your particular PMON flavour supports `fat' filesystems,
dnl you can boot the kernel from an usb key with:
dnl
dnl PMON> boot /dev/fs/fat@usb0:/bsd.rd
Netbooting the installation kernel can be done as well:
PMON> ifaddr rtl0 <your ip>
PMON> boot -k tftp://<server ip>/bsd.rd
OpenBSDInstallPart2
OpenBSDInstallPart3(,"sd0 for USB storage, or wd0 for internal storage
(either a disk drive or an SSD)")
OpenBSDInstallPart4
OpenBSDInstallMBRPart1
dnl OpenBSDInstallMBRPart2
The fdisk(8) utility will be invoked to let you edit your MBR
partitioning. The current MBR partitions defined will be
displayed and you will be allowed to modify them, and add new
partitions.
The setup will need one 'Linux files' partition and an 'OpenBSD'
partition. If you use the whole disk option, the install script
will create a small 'Linux files' partition and use the rest of
the disk for the OpenBSD installation.
After your OpenBSD MBR partition has been setup, the real
partition setup can follow.
OpenBSDInstallPart5({:-
Linux partitions defined on the disk will usually show up as
partition 'i', 'j' and so on.-:})
OpenBSDInstallPart6({:-CD-ROM, -:})
OpenBSDURLInstall
OpenBSDCDROMInstall
OpenBSDDISKInstall({:-"wdN" or -:},,{:-, Linux (ext2) or MS-DOS-:})
OpenBSDCommonInstall
dnl usb tape drives anyone?
dnl OpenBSDTAPEInstall
dnl
OpenBSDInstallWrapup
Lemote systems final steps:
Lemote systems ship with a boot menu. After an installation
preserving the Linux partitions is complete, you can add an
OpenBSD entry to the boot menu to be able to boot OpenBSD
more easily.
The boot menu contents are found in /boot/boot.cfg on the Linux
partition. To add an OpenBSD entry, simply add a new entry in
the file, such as:
title OpenBSD
kernel /dev/fs/ext2@wd0/boot/boot
args ""
In the example above, /dev/fs/ext2@wd0/boot/boot is the PMON
path to the OpenBSD bootloader, which is copied to
that location by the install script.
You may make OpenBSD the default option by changing the
``default'' line near the top of the file. The value on this
line is the index of the default entry, starting at zero. So
if you added the OpenBSD entry as the fourth entry in the
file, it would become the default choice with:
default 3
The timeout until the default choice is selected, in seconds,
can be modified on the ``timeout'' line.
However, due to side effects of PMON operation, automatic
loading of OpenBSD binaries (bootloader or kernel) causes
a register dump to be silently displayed by PMON; while
it won't be visible on screen, PMON will gladly wait for
user input to continue if it believes it has written too
much output.
To overcome this annoyance, simply change the `moresz'
environment variable to a large value (30 or larger will
do):
PMON> set moresz 30
The bootloader will attempt to load the kernel file set in
the `bsd' environment variable. Should this fail, it will
wait for user commands. The value of `bsd' should be a
path within the OpenBSD root filesystem on the disk, such
as:
PMON> set bsd /bsd
If you have removed the Linux installation or if you do not
want to use the boot menu, you may simply disable it in the
environment, and set the `al' variable
to point to the bootloader path:
PMON> set ShowBootMenu no
PMON> set al /dev/fs/ext2@wd0/boot/boot
Alternatively, you might want to create a /boot/boot.cfg
file in the small Linux partition created by the installation.
On the Fuloong 2F, getting PMON to use the serial console
is tricky, due to PMON bugs and design decisions made by
Lemote.
PMON's default serial speed is 115200, and OpenBSD will
also use that speed. By default, it is possible to use
serial input if no USB keyboard is attached. PMON will
nevertheless display output its on the VGA display.
To get full serial access, the first step is to boot
into PMON> with both serial console and VGA display but
no USB keyboard attached.
You can type on the serial console, but output will be shown
on the VGA display. Next enter the following
commands:
PMON> set novga 1
PMON> set nokbd 1
PMON> set al ""
PMON> set ShowBootMenu no
If you have a dual boot setup, mount the Linux boot partition
and rename /boot/boot.cfg so that it does not get found by
PMON. This will enable full serial access to PMON on
the Fuloong 2F.
Gdium systems final steps:
Gdium systems do not have a boot menu, and directly boot the
system (Linux, by default). Unfortunately, the OpenBSD
bootloader operation is very limited on this machine, as
it can not access USB devices (which means no keyboard
input as well).
To overcome this and be able to boot OpenBSD nevertheless,
the bootloader relies upon PMON's ability to load a Linux
so-called ``initrd'' image. By making PMON load the kernel
as the ``initrd'' image, and then run the bootloader,
the bootloader will be able to ``load'' the OpenBSD kernel
correctly.
The path to the file booted by default is set in the `al'
environment variable, and the path to the initrd image is
set in the `rd' environment variable.
To boot the bsd kernel on the G-Key by default, assuming it
has been copied to /boot/bsd on the first ext3 partition, and
the bootloader has been copied to /boot/boot on the same
filesystem, the settings are:
PMON> set al /dev/fs/ext2@usbg0/boot/boot
PMON> set rd /dev/fs/ext2@usbg0/boot/bsd
Alternatively, you can disable autoboot by removing this
variable:
PMON> unset al
OpenBSDCongratulations
|
