It's my first time using a mailing list in many years, hopefully i've
got this threaded properly. (Intended as a reply to "Jiang, Dave" and
"K. Posern")

I've got an intel MSM RAID0 set up nearly identical to K. Posern, my
differences are that i'm using an older revision controller (lspci
shows revision 02) - the 4 SATA drives are SSDs (though that shouldn't
matter), the imsm container is set up as /dev/md127 and the raid
volume (RAID-0) as /dev/md126. I am able to successfully read and
write from all partitions on the RAID-0 (I set up windows 7 on another
partition prior to attempting to get the linux partition(s) bootable)

Aside from the differences in the partition table, all errors I'm
receiving are the same. Running under Gentoo using the svn -9999
ebuild for grub2 (also tried grub in multiple ways receiving the same
error 22 message)

Incidental to the errors, my motivation to run with this configuration
is to maintain a dual boot with Windows 7 x64 Ultimate. I previously
had an mdadm software raid set up (RAID-1 /boot and RAID-0 /) which I
had no problem booting up with. But ideally i'd like to be able to use
Grub/Grub2 as the bootloader, and load both linux (Gentoo multilib
x86_64) and Windows 7 x64 from the RAID-0.

Any insight will be welcome, I suppose this message amounts to nothing
more than a simple "me, too!" though!
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This is a cryptographically signed message in MIME format.

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Hi Gabe,

On 21/08/10 03:53, gabe peters wrote:
> Any insight will be welcome, I suppose this message amounts to nothing=

> more than a simple "me, too!" though!

I got it working! Thanks to the *great* support of phcoder from the
grub2 community!

He developed a patch that allows the user a sane way to override
auto-detection mechanisms by supplying right device.map. It should get
merged to bzr in the next couple of days :) (it is not yet ideally
coded, but works :)

--> Basically allowing me to use /dev/md126 (the imsm Volume) as a grub
device, even though grub can't assemble it --> hence to use the int13
OROM assembled version of the raid-0 :)

If you want to give it a try:
# http://www.gnu.org/software/grub/grub-download.en.html
bzr branch http://bzr.savannah.gnu.org/r/grub/trunk/grub
# Apply this patch: http://pastebin.com/raw.php?i=3Dtgfqp9Hn
# e.g. download it to file "phcoder.patch"
# and run cat phcoder.patch|patch -p 0 in the "grub" directory that =

you received by the bzr command

# I think without any parameters it should be fine:
./configure
make
# this command triggered for me that /boot/grub got populated:
# for me /dev/mdYOURVOLUME was /dev/md126 (the imsm Volume)
./grub-probe /dev/mdYOURVOLUME
# make sure that /boot/grub/device.map contains:
(hd0) /dev/mdYOURVOLUME
./grub-probe /dev/mdYOURVOLUME -v
./grub-probe -t partmap /boot -v
# until know we changed NOTHING...
# ... so if you can also do this:
./grub-install /dev/mdYOURVOLUME
reboot

Hope this helps you as well.


Best,

Knuth


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