Re: grub-efi with latest mac mini

[Seth Goldberg]

Quoting Chris Murphy, who wrote the following on Fri, 8 Jun 2012:

> On Jun 8, 2012, at 12:57 PM, Seth Goldberg wrote:
>
> > > You mix again 2 things: you can boot in BIOS mode (CSM) on pure GPT as
> > > well. Windows is an exception since Microsoft pretends that possible is
> > > impossible.
> >
> >  Unless you have a stupid BIOS that doesn't boot from the disk if your DOS 
> > partition table has no entries (i.e. the GPT PMBR) marked active.
>
> If the MBR contains two entries, and the PMBR is the entry with active flag 
> set, Apple's CSM will not activate.
>
> Only MBR entries 2, 3 or 4 can be activated to cause the CSM to activate.

  That makes sense, since setting the PMBR as active is a violation of the 
UEFI spec.

 --S