On 9/9/2011 3:01 PM, Bill Davidsen wrote:
Simon Matthews wrote:
On Sat, Sep 3, 2011 at 10:03 AM, Simon Matthews
<simon.d.matthews@xxxxxxxxx> wrote:
On Sat, Sep 3, 2011 at 5:17 AM, Robin Hill<robin@xxxxxxxxxxxxxxx> wrote:
On Sat Sep 03, 2011 at 04:35:39 -0700, Simon Matthews wrote:
On Fri, Sep 2, 2011 at 8:42 AM, Timothy D. Lenz<tlenz@xxxxxxxxxx>
wrote:
How did you install Grub on the second drive? I have seen some
instructions on the web that would not allow the system to boot
if the
first drive failed or was removed.
I think this is how I did it, at least it is what I had in my notes:
grub-install /dev/sda&& grub-install /dev/sdb
And this is from my notes also. It was from an IRC chat. Don't
know if it
was the raid channel or the grub channel:
[14:02]<Jordan_U> Vorg: No. First, what is the output of grub-install
--version?
[14:02]<Vorg> (GNU GRUB 1.98~20100115-1)
[14:04]<Jordan_U> Vorg: Ok, then run "grub-install /dev/sda&&
grub-install
/dev/sdb" (where sda and sdb are the members of the array)
Which is exactly my point. You installed grub on /dev/sdb such that it
would boot off /dev/sdb. But if /dev/sda has failed, on reboot, the
hard drive that was /dev/sdb is now /dev/sda, but Grub is still
looking for its files on the non-existent /dev/sdb.
The way I do it is to run grub, then for each drive do:
device (hd0) /dev/sdX
root (hd0,0)
setup (hd0)
That should set up each drive to boot up as the first drive.
How about (after installing grub on /dev/sda):
dd if=/dev/sda of=/dev/sdb bs=466 count=1
ooops, that should be bs=446, NOT bs=466
Which is why you use grub commands, because a typo can wipe out your
drive. May or may not have in this case, but there's no reason to do
stuff like that.
Found the problem:
[13:06] <Jordan_U> Vorg: That error is from grub legacy.
[13:08] <Jordan_U> Vorg: Grub2 doesn't use error numbers. "grub error 2"
is from grub legacy.
I had updated the boot drives to the new Grub. Checked in bios and it
was set to boot from SATA 3, then SATA 4 AND THEN SATA 1 :(. The second
pair are data drives and where never ment to have grub.
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