[Bug 451585] [NEW] grub2-mkconfig omits part_gpt module

[LasVegas]

Public bug reported:

Binary package hint: grub2

I have installed 9.10 netbook remix, beta on my EEE PC 1000.  I've set
this computer up to dual boot Ubuntu and OSX.  When the
/boot/grub/grub.cfg file is made it seems to set everything up for dual
booting o.k., except the module "part_gpt" fails to be listed in the
grub.cfg file.  So the "insmod hfsplus" line is correctly listed, but it
also needs the "insmod part_gpt" line to properly access the gpt disk
partitions.  The workaround I'm using (being no expert, however) is to
insert the line "insmod part_gpt"  at the top of the  "macos)" section
of the "/etc/grub.d/30_os-prober" script.  I suspect the proper fix
ought to be in the opaque "prepare_grub_to_access_device" utility of
30_os-prober, about which I know nothing.

The grub2 version is 1.97-beta3-1ubuntu8.

A separate issue, specific to the EEE PC 1000 perhaps but I'll mention
it, is that the two disks are listed as "primary slave" and "secondary
master".  At bootup the BIOS sees "primary slave" as hd0 and "secondary
master" as hd1.  But Ubuntu/linux has "primary slave" as /dev/sdb and
"secondary master" as /dev/sda.  Since my OSX is on "secondary master",
I have to manually change the "set root=(hd0,2)" line that is
automatically configured by grub2 in /boot/grub/grub.cfg to "set
root=(hd1,2)".

Getting perhaps more esoteric, I note that one standard location for the
DSDT.aml file for OSX is in the root partition "/dsdt.aml" - I manually
changed the "30_os-prober" script to set that correctly for my system.

With these workarounds (painfully sorted out...) grub2 is booting OSX
fabulously!

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New

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grub2-mkconfig omits part_gpt module
https://bugs.launchpad.net/bugs/451585
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