Subject: Re: setting up a HP 425
To: Marc Boschma <email@example.com>
From: Jason Thorpe <firstname.lastname@example.org>
Date: 07/04/1995 11:36:49
On Tue, 4 Jul 1995 13:13:11 +1000
Marc Boschma <email@example.com> wrote:
> I have recently obtained a HP 425 beastie and after reading the Netbsd 1.0
> installation notes I've begun to wonder if the installation process could be
> done from a PC based Netbsd box.
I don't see why not. I've heard of people building NetBSD boot disks
for the hp300 under Linux, NeXTSTEP, and Domain/OS. The only thing you
really need is access to the character device that corresponds to the
`whole disk'. I've not tried it in _several_ months, but I'm relatively
certain that the MI SCSI code used by most ports (including the i386)
allows writing the the `whole disk' partition when a disklabel is not
> Is there anything really special about the makedisk app ?(I'll admit I
> haven't gotten round to reading the source for it yet).
It really amounts to nothing more than parts of the disklabel(8) program
along with enough goo there to write the disklabel, bootblock, and root
> Disklabel the disk.
> dd the boot block and root file system onto the disk.
This is essentially what `makedisk' does ... Note, however, that the
i386 disklabels and the hp300 disklabels are not stored in the same
format on disk. You will therefore have to write an hp300 disklabel in
the correct format (and byte-order) to the disk directly. `makedisk'
takes care of this for you. Again, I've not tried this myself, but have
heard reports of others doing this sucessfully on little-endian
platforms. You may have to pass the appropriate flags to `dd' (makedisk
uses it) to swap the bytes on the way out to disk.
> newfs the other file systems
> copy over source etc that I want.
Actually, you're going to have to do this under NetBSD/hp300. FFS
doesn't understand byte-swapping.
> Move the disk into the 425 and boot ?
If you need more help, feel free to communicate with me directly. I've
gone though the bootstrapping process bunches of times (albeit, always
with another hp300, since there was no shortage of them at my old job).
Jason R. Thorpe firstname.lastname@example.org
NASA Ames Research Center Home: 408.866.1912
NAS: M/S 258-6 Work: 415.604.0935
Moffett Field, CA 94035 Pager: 415.428.6939