Re: Converting system to raid

["Timothy D. Lenz" <tlenz@vorgon.com>]

While booted on the array I renamed device.map and ran:
sudo grub --no-floppy --device-map=/boot/grub/device.map

But the new map is the same:
(hd0) /dev/hda
(hd1) /dev/sda
(hd2) /dev/sdb

----- Original Message ----- 
From: "Robin Hill" <robin@robinhill.me.uk>
To: <linux-raid@vger.kernel.org>
Sent: Sunday, April 12, 2009 4:11 AM
Subject: Re: Converting system to raid

> Before when at the grub boot menu when booting with the ide moved
> below the sata drives, droping to command line for grub showed that
> the ide drive only moved down 1, not 2. It seemed to have:
>   hd0 = sda
>   hd1 = hda
>   hd2 = sdb
> 
> Now with the array booted, going to the grub command line and using
> auto complete for "root (hd0," it seems to be using the device map at
> this point which is no longer correct:
> (hd0) /dev/hda
> (hd1) /dev/sda
> (hd2) /dev/sdb
> 
> Note that in the other system, because linux was installed with only
> the ide and 1 sata drive, it doesn't even list the other two in it's
> device map. So what is the best/safest way to update/correct this to
> what ever it should be?
>
Just delete/rename the old device map file (/boot/grub/device.map) and
run grub again - it'll rescan the devices and create a new map file.