[Bug 388135] Re: [Karmic, grub2] fails to start OS X

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: grub2 (Ubuntu)
   Status: New = Confirmed

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https://bugs.launchpad.net/bugs/388135

Title:
  [grub2] fails to start OS X

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[Bug 388135] Re: [Karmic, grub2] fails to start OS X

[Andrew Cranwell]

Under 10.10 I get two menu entries for Mac OS X:

menuentry Mac OS X (32-bit) (on /dev/sda2)

and

menuentry Mac OS X (64-bit) (on /dev/sda2)

Are the people having this bug on currently supported releases (10.04
onwards) using Apple hardware or otherwise? Personally I'm not even
using the Ubuntu grub package - I'm using rEFIt and a self-compiled
grub2 that I copied into the EFI partition.

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https://bugs.launchpad.net/bugs/388135

Title:
  [Karmic, grub2] fails to start OS X

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[Bug 388135] Re: [Karmic, grub2] fails to start OS X

[gabr10]

Same here, installed 10.04 LTS and GRUB2 creates two menu entries for
OSX, it boots in verbose and safe mode so obviously something's wrong.

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[Bug 388135] Re: [Karmic, grub2] fails to start OS X

[Francisco Villalobos]

I installed Ubuntu 10.04 LTS and still haven the same problem with GRUB
2

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[Bug 388135] Re: [Karmic, grub2] fails to start OS X

[Francisco Villalobos]

GRUB2 starts Leopard in verbose mode, but at final the boot freezes

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[Bug 388135] Re: [Karmic, grub2] fails to start OS X

[LasVegas]

I've just filed a similar bug report before I found this report.  The
problem I reported was that (for me) the part_gpt module needs to be
loaded for grub to find the OSX partition.  So one possible solution is
that grub.cfg should list:

insmod hfsplus
insmod part_gpt
set root=(hd0,2)

the part_gpt module for GPT partitioning, should then give grub2 access
to the (hd0,2) partition.

(The hanging blue screen may be because the dsdt.aml acpi/bios file was
not properly loaded ... on my machine without the dsdt.aml file properly
loading OSX will hang for quite a while at the blue screen, but will
eventually load.  It seems to be an OSX/SATA issue on my machine.)

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[Bug 388135] Re: [Karmic, grub2] fails to start OS X

[DasFox]

I'm running a 13 Macbook Pro and grub2 is also not booting OS X even
though it's making a menu entry for it in grub.cfg.

My grub.cfg:

### BEGIN /etc/grub.d/30_os-prober ###
menuentry Mac OS X (on /dev/sda2) {
insmod hfsplus
set root=(hd0,2)
search --no-floppy --fs-uuid --set 80ca433c88483ea9
insmod vbe
do_resume=0
if [ /var/vm/sleepimage -nt10 / ]; then
   if xnu_resume /var/vm/sleepimage; then
 do_resume=1
   fi
fi
if [ $do_resume == 0 ]; then
   xnu_uuid 80ca433c88483ea9 uuid
   if [ -f /Extra/DSDT.aml ]; then
  acpi -e /Extra/DSDT.aml
   fi
   xnu_kernel /mach_kernel boot-uuid=${uuid} rd=*uuid
   if [ /System/Library/Extensions.mkext -nt /System/Library/Extensions 
]; then
  xnu_mkext /System/Library/Extensions.mkext
   else
  xnu_kextdir /System/Library/Extensions
   fi
   if [ -f /Extra/Extensions.mkext ]; then
  xnu_mkext /Extra/Extensions.mkext
   fi
   if [ -d /Extra/Extensions ]; then
  xnu_kextdir /Extra/Extensions
   fi
   if [ -f /Extra/devtree.txt ]; then
  xnu_devtree /Extra/devtree.txt
   fi
   if [ -f /Extra/splash.jpg ]; then
  insmod jpeg
  xnu_splash /Extra/splash.jpg
   fi
   if [ -f /Extra/splash.png ]; then
  insmod png
  xnu_splash /Extra/splash.png
   fi
   if [ -f /Extra/splash.tga ]; then
  insmod tga
  xnu_splash /Extra/splash.tga
   fi
fi
}
### END /etc/grub.d/30_os-prober ###

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