Subject: Re: Getting mac68k drives working on a macppc machine...
To: gabriel rosenkoetter <gr@eclipsed.net>
From: Roger Brown <rogerhb@xtra.co.nz>
List: port-macppc
Date: 09/19/1999 00:44:25
You might be better off trying to boot into MacOS rather than using NetBSD
especially if the files have datafork/resource fork.
As long as the hardware works, I would try and boot from an MacOS CD, and
put a small version of a PPC
OS on one of the harddrives and then boot that.
It depends on where you finally want to do with the files..
At least you could see them again and see how you want to recover the data.
You could always run an 'ftpd' deamon on the PPC MacOS machine and ftp stuff
back to the Sun.

Roger

----------
>From: gabriel rosenkoetter <gr@eclipsed.net>
>To: port-macppc@netbsd.org, port-mac68k@netbsd.org
>Subject: Getting mac68k drives working on a macppc machine...
>Date: Fri, Sep 17, 1999, 12:00 pm
>

>So, I've got these two, old external hard drives that were once on my
>Performa 636 running NetBSD/mac68k 1.3.1. They've got a lot of files
>that I want into, but I don't have any 68k macs floating around
>nearby.
>
>I *do* have my current ppc machine (the one I'm typing this on,
>actually, albeit sshed from a Sun E450), a 7500 running NetBSD/macppc
>1.4.1.
>
>I would like to connect these SCSI drives to the (MESH) external SCSI
>adapter on my PPC and mount them at, say, /oldmachinename. Didn't
>think this would be a problem... but I started to have concerns when I
>saw that the macppc port uses a munged Apple partition map to manage
>booting via Open Firmware... then again, these things are just SCSI
>2 drives with ffs file systems... right? I mean, it's not like I want
>to boot off of them, why do their (unused) Apple partition maps even
>come into it?
>
>Well, when I actually plugged them in, I got all kinds of errors. I
>think a big part of that was that the external SCSI chain gets
>addressed before the internal one, meaning that this external drive
>was at sd0, my (internal) macos drive at sd1, and my NetBSD/macppc
>drive at sd2... which utterly messes up its fstab expectations. Even
>after fixing the fstab, I couldn't manage to get the drive mounted,
>though I'll admit I wasn't incredibly persistant.
>
>In hindsight, I realized that the external drive was at SCSI ID 1,
>same as the internal, NetBSD boot drive, but this shouldn't matter as
>the 7500 motherboard has separate SCSI chains for the external and
>internal chains. (Anyway, if it were a SCSI ID conflict, I'd have
>gotten problems long before getting to assignation of device names.)
>
>So my question is, is it possible to mount these ex-mac68k drives on
>my macppc machine? Has anyone done so? If so, how? If no one's tried,
>but it should theoretically be possible, what's my next step? No, I
>wouldn't like to just reformat the drives - I want the data that's on
>them. (If it comes to it, I guess I can give in, find a 68k mac, boot
>on it on the network here at swarthmore.edu, tar the two drives up -
>total of about 750 MBs - and transfer them to the new machine, but
>that's a terrible pain.)
>
>Any help greatly appreciated...
>
>       ~ g r @ eclipsed.net