Re: [OpenBIOS] QEMU OpenBIOS booting?

[Dave Willoughby]

On Apr 19, 2009, at 3:31 AM, Laurent Vivier wrote:
> Le dimanche 19 avril 2009 à 10:03 +0200, Andreas Färber a écrit :
> > Am 19.04.2009 um 09:50 schrieb Steven Noonan:
> > > On Tue, Apr 14, 2009 at 10:46 PM, Steven Noonan
> > >  wrote:
> > > > On Sun, Apr 12, 2009 at 1:39 AM, Laurent Vivier
> > > >  wrote:
> > > > > OpenBIOS is not able to boot MacOS X.
> > > >
> > > > Well, that's a silly limitation. Is there a reason this isn't
> > > > implemented? I see that the Mac-on-Linux OpenBIOS version has such
> > > > support, so it seems strange that the QEMU version does not.
> > >
> > > I don't know if anyone here is actually interested (this list seems
> > > -very- quiet), but...
> > >
> > > I've been hacking at OpenBIOS for a bit, and I got it to properly  
> > > read
> > > Mac OS X discs (it kept failing because it would hit an Apple
> > > Partition Map header instead of an HFS+ filesystem header). I'm
> > > working on adding an XCOFF loader, too, so it should be able to boot
> > > Mac OS X soon.
> > >
> > > Any chances I could get these changes merged to the main OpenBIOS  
> > > tree
> > > once they're done?
> > >
> > > My current working repository is at http://github.com/tycho/ 
> > > openbios.
> > > I'm working on the macosx-boot branch. The relevant commit is here
> > > (patch also attached):
> > > http://github.com/tycho/openbios/commit/4722c8a01d186a08183de49759dc8b7b74cf...
> > >
> > > Thoughts?
> >
> > Your work surely sounds interesting. However, making OpenBIOS boot
> > from the disks is not everything there is to it. Alexander Graf had
> > once posted a series of patches for making Mac OS X boot in QEMU,
> > including changes/additions to device emulation. They were not  
> > merged,
> > not sure about the status today.
>
> Alexander made a work to boot Intel Mac OS X.
> It works very well with KVM (I use it).
>
> http://alex.csgraf.de/
>
> See the HowTo http://d4wiki.goddamm.it/index.php/ 
> Howto:_Mac_OSX_on_KVM .

I'm trying the Mac_OSX_on_KVM Howto above.

I'd like to boot an existing, bootable Mac OS X 10.5.5 GPT formatted,  
external USB HDD, which boots fine on my 4,1 MBP.

Does anyone know if Alexander's kvm-osx-bootloader can boot real, host  
managed HDDs, or is it dependent on something associated with disk  
image files, created by qemu-img?

I don't have the message in front of me now, but I think I was getting  
"device not found" when I used -hda /dev/sdc or -hda /dev/sdc1.
> > One issue iirc was that you need to obtain some Apple ID from a real
> > Mac of yours and pass that to QEMU for it to work.
>
> I don't think it is needed with powerPC MacOS X.
> I seems OpenHackware was able to boot powerPC MacOS X. Perhaps we  
> should
> look at it.
>
> Regards,
> Laurent