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You will need an AmigaDOS hard drive prep tool to prepare you hard
drives for use with OpenBSD/amiga. HDToolBox is provided with the
system software and on floppy installation disks since Release 2.0
of AmigaDOS so we will provide instructions for its use.
Preparing you hard disk with HDToolBox:
A full explanation of HDToolBox can be found with your
AmigaDOS manuals and is beyond the scope of this document.
Note you will be modifying your HD's if you mess something
up here you could lose everything on all the drives that
you configure. It is therefore advised that you:
Write down your current configurations. Do this
by examining each partition on the drive and the
drives parameters (from Change drive type.)
Back up the partitions you are keeping.
What you need to do is partition your drives; creating at least
root, swap and /usr partitions and possibly at least one more for
/local if you have the space. (The root and swap partitions must
be on the same drive for your initial installation. You can use
other configurations after building a customized kernel once your
system is running.)
This should be done as the HDToolBox manual describes. One thing
to note is that if you are not using a Commodore controller you
will need to specify the device your SCSI controller uses e.g.
if you have a Warp Engine you would:
from cli,
hdtoolbox warpdrive.device
from wb set the tooltype,
SCSI_DEVICE_NAME=warpdrive.device
The important things you need to do above and beyond normal
partitioning includes (from Partition Drive section):
Marking all OpenBSD partitions as non-bootable.
Changing the file system parameters of the partitions
to OpenBSD ones. This must be done from the
partitioning section and `Advanced options' must
be enabled. To Make the needed changes:
- Click the `Adv. Options' button
- Click the `Change filesystem' button
- Choose `Custom File System'
- Turn off `Automount' if on.
- Set the dostype to one of these three choices:
root partition : 0x4e425207
swap partition : 0x4e425301
other partitions: 0x4e425507
Here `other' refers to other partitions you will
format for reading and writing under OpenBSD (e.g.
/usr)
Make sure you hit the return key to enter this value
as some versions of HDToolBox will forget your entry
if you don't.
- Turn custom boot code off
- Set Reserved Blocks start and end to 0.
- Click Ok.
Mask and maxtransfer are not used with OpenBSD.
Until you compile your own kernel your swap partition
must exist on the drive that also holds your root
partition.
Once this is done OpenBSD/amiga will be able to recognize your
disks and which partitions it should use.
Transferring the miniroot filesystem:
The OpenBSD/amiga installation or upgrade now uses a "miniroot"
fileystem which is installed on the partition used by OpenBSD
for swapping. This removes the requirement of using a floppy
disk for the filesystem used by the installation or upgrade
process. It also allows more utilities to be present on the
filesystem than would be available when using an 880K floppy
disk.
Once the hard disk has been prepared for OpenBSD, the appropriate
miniroot filesystem (inst-11.fs for a new install or upgr-11.fs
for an upgrade) is transferred to the swap partition configured
during the hard disk prep (or the existing swap parition in
the case of an upgrade). The xstreamtodev utility provided in
the "amiga/utilities" directory can be used on AmigaDOS to
transfer the filesystem for either a new installation or an
upgrade. The filesystem can also be transferred on an existing
OpenBSD system for an update by using dd. This should only be
done after booting OpenBSD into single-user state. It may also
be possible to shutdown to single-user, providing that the
single-user state processes are not using the swap partition.
On AmigaDOS, the command:
xstreamtodev --input=inst-11.fs --rdb-name=<swap partition>
where <swap partition> is the name you gave to the OpenBSD
partition to be used for swapping. Use upgr-11.fs if you
are going to do an upgrade of an existing OpenBSD system. If
xstreamtodev is unable to determine the SCSI driver device
name or the unit number of the specified partition, you may
also need to include the option "--device=<driver.name>" and/or
"--unit=<SCSI unit number>".
To transfer the miniroot using OpenBSD, you should be booted up
in single user state on the current OpenBSD system, or use the
"shutdown now" command to shutdown to single-uyser state. Then
copy the miniroot using dd:
dd if=upgr-11.fs of=/dev/rsd0b
where /dev/rsd0b should be the device path of the swap partition
your system is configured to use. Once the file is copied,
reboot back to AmigaDOS to boot the upgrade kernel. NOTE: the
release kernel is a "generic" kernel, and requires that the
swap partition be on the same device as the root partition.
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