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Installation is supported from several media types, including:
CDROM
FFS partitions
Tape
Remote NFS partition
FTP
HTTP
rsh & restore
Unless the machine already has openbsd installed on it, and
the bootloader can be loaded from local disk the bootloader will
need to be loaded from the network (netboot) but from there
the system can be installed from any of the above.
While an installation floppy is included in the snapshot it is unlikely
that it will be very useful due to lack of floppy drive on the imac
and the reported inabilty to boot from USB floppies on the supported
version of the hardware.
Obviously, the steps necessary to prepare the distribution sets for
installation or upgrade depend on which installation medium you
choose. The steps for the various media types are outlined below.
To install or upgrade OpenBSD using a tape, you need to do the
following:
To install OpenBSD from a tape, you need to make a tape that
contains the distribution set files, in "tar" format. If
you're making the tape on a UN*X-like system, the easiest way
to do so is probably something like:
tar cf <tape_device> <dist_directories>
where "<tape_device>" is the name of the tape device that
describes the tape drive you're using (possibly /dev/rst0, or
something similar, but it will vary from system to system.
(If you can't figure it out, ask your system administrator.)
In the above example, "<dist_directories>" are the
distribution sets' directories, for the distribution sets you
wish to place on the tape. For instance, to put the "base{:--:}OSrev"
and "etc{:--:}OSrev" distributions on tape (in order to do the absolute
minimum installation to a new disk), you would do the
following:
cd .../OSREV # the top of the tree
cd MACHINE/
tar cf <tape_device> base{:--:}OSrev etc{:--:}OSrev
(Note that you still need to fill in "<tape_device>" in the
example.)
Once you have the files on the tape, you can proceed to the
next step in the installation or upgrade process. If you're
installing OpenBSD from scratch, go to the section on preparing
your hard disk, below. If you're upgrading an existing
installation, go directly to the section on upgrading.
To install or upgrade OpenBSD using a remote partition, mounted via
NFS, you must do the following:
NOTE: This method of installation is recommended only for
those already familiar with using BSD network
configuration and management commands. If you aren't,
this documentation should help, but is not intended to
be all-encompassing.
Place the OpenBSD distribution sets you wish to install into a
directory on an NFS server, and make that directory mountable
by the machine on which you are installing or upgrading OpenBSD.
This will probably require modifying the /etc/exports file on
of the NFS server and resetting its mount daemon (mountd).
(Both of these actions will probably require superuser
privileges on the server.)
You need to know the the numeric IP address of the NFS server,
and, if the server is not on a network directly connected to
the machine on which you're installing or upgrading OpenBSD,
you need to know the numeric IP address of the router closest
to the OpenBSD machine. Finally, you need to know the numeric
IP address of the OpenBSD machine itself.
Once the NFS server is set up properly and you have the
information mentioned above, you can proceed to the next step
in the installation or upgrade process. If you're installing
OpenBSD from scratch, go to the section on preparing your hard
disk, below. If you're upgrading an existing installation, go
directly to the section on upgrading.
If you are upgrading OpenBSD, you also have the option of installing
OpenBSD by putting the new distribution sets somewhere in your existing
file system, and using them from there. To do that, you must do the
following:
Place the distribution sets you wish to upgrade somewhere in
your current file system tree. At a bare minimum, you must
upgrade the "base" binary distribution, and so must put the
"base{:--:}OSrev" set somewhere in your file system. If you wish,
you can do the other sets, as well, but you should NOT upgrade
the "etc" distribution; the "etc" distribution contains system
configuration files that you should review and update by hand.
Once you have done this, you can proceed to the next step in
the upgrade process, actually upgrading your system.
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