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Re: Use PBR with BIOS Boot Partition, not blocklists?

From: Isaac Dupree
Subject: Re: Use PBR with BIOS Boot Partition, not blocklists?
Date: Tue, 13 Dec 2011 11:48:26 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:8.0) Gecko/20111108 Thunderbird/8.0

On 12/13/2011 02:19 AM, Jordan Uggla wrote:
On Tue, Dec 6, 2011 at 7:44 PM, Isaac Dupree
<address@hidden>  wrote:
Hi GRUB-ers,


Apple's BIOS implementation, at least on my Macbook2,1 , flips out and fails
to boot if you put GRUB* in the usual MBR location.**


First, please run "grub-install /dev/sda" with no other work arounds
(preferably with grub 1.99) then run boot info script and post the
RESULTS.txt which it produces (to see if there are any other obvious
problems which might be causing boot to fail).

Okay I will. What state would you like my msdos partition-map to be in at the time I test -- EFI Protective[1], or a hybrid MBR/GPT[2], or something else? Would you like me just to run the boot info script for you, or also to say what happens when I boot from that state? If I boot from that state to test, is it enough for me to hold alt/option[3] to choose booting the MBR, or should I reset the NVRAM to test (in which case I may or may not have to hold alt/option anyway to choose MBR boot)?

[1] I think this is the Apple default but I've changed it so much since buying my machine that I'm not sure. I also won't know what state Apple's Windows-installing Boot Camp GUI puts the disk/NVRAM in because I haven't done that and won't do that.

[2] which I'm using right now so that I can boot via PBR

[3] Holding alt/option while booting, in Apple's firmware, lets you pick what to boot amongst the options it can detect.


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