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[bug #42954] chainloading OS X bootloader fails

From: Chris Murphy
Subject: [bug #42954] chainloading OS X bootloader fails
Date: Mon, 27 Oct 2014 03:57:20 +0000
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.104 Safari/537.36

Follow-up Comment #1, bug #42954 (project grub):

Explicitly setting root appears to be necessary. This works:

set root=(hd1,gpt3)
chainloader (hd1,gpt3)/System/Library/CoreServices/boot.efi

It's necessary to do an ls first in order to determine the actual hdX
designation, which on two systems flips non-deterministically between boots
between hd0 and hd1, sometimes hd3 if another device is attached, such as a
USB stick.

Tested on master branch, Fedora 20 and Fedora 21 GRUB; two different vintage
MacbookPros (8,2 and 9,2); and OS X 10.8.5 with an encrypted CoreStorage
volume, and OS X 10.10 unencrypted CoreStorage volume.

This bug is therefore probably not a bug!


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