Re: [Qemu-devel] Commit 77af8a2b95b79699de650965d5228772743efe84 breaks Windows 2000 support

[BALATON Zoltan]

On Fri, 21 Jul 2017, Phil Dennis-Jordan wrote:
> On Fri, Jul 21, 2017 at 12:50 PM, BALATON Zoltan <address@hidden> wrote:
> > I don't know if this helps but I've found that this same commit also broke
> > booting OS X on q35 with OVMF and Clover (some old versions I had and worked
> > before this commit). See here:
> > http://lists.nongnu.org/archive/html/qemu-devel/2017-06/msg04306.html
> >
> > Maybe it's simpler to debug as these are open source but it's still not very
> > clear why they fail because it starts to boot OS X but hangs during kernel
> > init (and maybe Win2K fails to boot because of something else). I think I've
> > seen this with OVMF 58f025afd and Clover 3354 (or around that, not
> > completely sure about these versions).
>
> OVMF had 2 bugs that totally mucked up the ACPI tables if Qemu didn't
> supply its loader commands "just so", and modified ACPI 2.0-5.0 FADTs
> in such a way that they were no longer valid. These are fixed in
> 198a46d and 072060a, which are about a year newer than 58f025afd, so
> it's no surprise this combination doesn't work. I have no idea if
> Clover on top makes any difference.

I've tried with 072060a and with that version OS X boots with same Clover 
so my problem seems to have been too old OVMF version and Clover does not 
make a difference here. So this also likely has nothing do with the Win2k 
problem discussed in this thread so you can disregard my post.

Thank you,
BALATON Zoltan