Re: GRUB - triboot not working

On Thu, 28 Aug 2008, John Bowling wrote:-

Where did the (hd1,11) come from?

That'll probably be sda12. If you post the contents of
/boot/grub/device.map , we can confirm it.

Per the docs for Grub, the drive and the
partition number start at 0 -- so what root is on sdb12 - per (hd1,11) - a
non-existant partition? Which means the docs for Grub are fully inaccurate,
or ????

No, it means that 11.0 detected the drive order differently from 10.3
and so thinks /dev/sdb is the first drive, hd0, and /dev/sda is the
second drive, hd1.

If it points to the boot partition, is should be (hd0,11).

Check that with which drive is which in /boot/grub/device.map to make
sure, but that would be correct if /dev/sda is (hd1).

And if they start at 1, why does entering a 2 for the first number give
non-existant disk?

How about because it doesn't exist? Grub starts numbering from 0. (hd0)
is the first drive, and (hd0,0) is the first partition on the first
drive.

I tried copying the primary info for 10.3 on sdb1 /boot/grub/menu.lst into
the sda12 menu.lst for 10.3 - I expected the root () stuff to not point
right then, but what is a correct pointer - I also tried editing it when
grub failed on boot, for both Windows and 10.3, but nothing works -
either the specified drive doesn't exist, or the partition does not contain
a root function.

Given what I know, my guess is that the drive detection found the dives
in a different order to 10.3, and the layout of the important partitions
is probably this:

/dev/sda10 is / for 11.0 , which grub sees as (hd1,9)
/dev/sda12 is /boot for 11.0 , which grub sees as (hd1,11)
/dev/sdb1 is / for 10.3, which grub sees as (hd0,0)

I also did an MBR restore on both disks and then another boot loader repair.

My next step is to re-install Win 2K (though I will lose some required data
that way),

Boot the W2K install CD, select the repair option and use the commands
fixboot and/or fixmbr to make it boot into W2K.


Regards,
David Bolt

--
www.davjam.org/lifetype/ www.distributed.net: OGR@100Mnodes, RC5-72@15Mkeys
SUSE 10.1 32b | | openSUSE 10.3 32b | openSUSE 11.0 32b
| openSUSE 10.2 64b | openSUSE 10.3 64b | openSUSE 11.0 64b
RISC OS 3.6 | TOS 4.02 | openSUSE 10.3 PPC | RISC OS 3.11
.

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