after running the installer on a PowerMac G5 no root filesystem found

Michael Tuexen Michael.Tuexen at
Wed Nov 14 08:11:10 UTC 2018

> On 13. Nov 2018, at 23:03, Dennis Clarke <dclarke at> wrote:
> Not sure if this is a bug in the installer or what but I can tell you
> that the installer seems to do what it says it will do.  I boot a G5
> with the latest 12.0b4 installer dvd and go through the usual motions
> wherein I select a whole disk auto ufs install and allow the installer
> to do whatever magic it does for an Apple type partition.  Every other
> type of partition results in a popup message that simply says this
> platform can not support or boot or grok this partition. So I go with
> the Apple type. Nothing else fancy here.
> At first boot I get a load of text and then a strange prompt that seems
> to be asking where is the root filesystem? It also lists all the various
> filesystems found. I tried to enter ufs:/dev/adas2 and similar things
> but this gets me nothing but an unrecognized filesystem message.
> So .. something obvious?
Can you try setting the variable kern.smp.disabled to 1 at the
loader prompt?
If that helps, you can add
to /boot/leader.conf

I had all sorts of problems until I disabled SMP on my G5 PowerMacs.
Without SMP they are running very stable.

Best regards
> Dennis
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