On Tue, Apr 21, 2009 at 9:49 PM, Isaac Dupree <
m...@isaac.cedarswampstudios.org> wrote:

> Peter Cros wrote:
> > I don't think it is compatible with current MBR/GPT hybrid ?partitioning
> on
> > intel macs for grub-pc booting.
>
> well, it doesn't necessarily order the partitions in the same way as e.g.
> rEFIt gptsync does, but that's because this GRUB implementation gives you
> more
> control!  You can even pick different MBR-partition-configurations, before
> booting different OSes.

Yes it was written with such possibility in mind. I don't see why grub2 will
enforce mbr partitions to be sorted since mbr doesn't require such thing. If
you ask grub2 to put partitions in reverse order it does it. As to partition
in zeroth slot it spans across  the space before the first MBR partition and
is so called protective partition and is required for some tools including
grub2 itself to recognise gpt disk as such.
About compatibiliy: hybrid MBR is against specifications - it's a trick to
boot legacy OS. So the only compatibility you can speak about is the ability
to boot a legacy OS of your choice.

>
>
> Vladimir Serbinenko wrote:
> > Here there are 2 differences. First partition type for hfs+ isn't
> > autodetected, I will fix this, just I thought it ws unnecessary AFAIK
> every
> > OS which understands HFS+ understands GPT.
>
> At least Mac OS X 10.3 and earlier don't understand GPT, and it actually
> makes
> a difference with Apple's "target disk mode"!  And there may be a few other
> combinations.
>
Ok

>
> -Isaac
>
>
>
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