On 10/31/17 20:56, SFM wrote:
Hi PPC enthusiasts !

I have embarked in the (apparently suicidal) mission of installing OpenBSD 6.2 
on the very first iMac, which is running Mac OS 8.6. I also have a Mac OS X CD 
which I use only for partitioning through disk utility.

Progress :

I Downloaded the iso image OpenBSD 6.2 macppc and Burned it into a bootable CD,

Partitioned my only hard drive with two equally sized HFS+ partitions. Mac OS 
8.6 is installed in the first one. Goal: installing OpenBSD in the second HFS+ 
partition, keeping my MacOS partition intact.

The problem:

Although I followed the partitioning advise on MacPPC.install, the OpenBSD 
installer (i do not remember anymore if it was fdisk or pdisk) states that the 
drive does not have a valid partition table and shows the entire space as 
unallocated!

The request:

Someone, anyone willing to help me make my wish come true of installing OpenBSD 
in this baby, could help me with the following:

1) A brief but powerful description of the partitioning process.

2) a brief explanation of how is one supposed to “use Mac OS to move the 
bootloader to the first partition of the disk”, which is the last message after 
a successful installation (pretty shocking to read that if you just got rid of 
exactly that OS;  I did this mistake in the past, twice)

For both of these matters, The information contained in the installation 
document is simply not Enough for double booters. I wish that could be 
different.

Additionally, there seems to be strong disagreement on wether openfirmware 
allows booting from a usb stick, even more when it comes to older machines, 
like my iMac. Has anyone here had any successful experiences with this ?

Thank you very much in advance for any hints, comments and help !

Raymundo.-


Hi,

My iBook G4 has only had OpenBSD on for the last few upgrades - as Apple stopped supporting Mac OS X :~) but prior to Jan 2016 I happily dual booted it.

To dual boot it - once you have installed OpenBSD you need to boot into mac and copy the ofwboot from the installation to the root of your mac partition - this can be done by ftp'ing the file so for 6.2 you would:

ftp ftp://ftp.eu.openbsd.org/pub/OpenBSD/6.2/macppc/ofwboot

once ofwboot is in the root partition of the HFS+ filesystem I would boot OpenBSD by typing:

0 > boot hd:,ofwboot

at the Open firmware prompt.

Hope fully this answers question 2.

The fdisk manpage (http://man.openbsd.org/fdisk) describes disk partitioning better than I can.

hth, and enjoy running OpenBSD on macppc :~)

Cheers

Fred


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