On Wed, Aug 19, 2009 at 12:06, Felix Zielcke
<address@hidden> wrote:
Am Dienstag, den 18.08.2009, 17:44 +0200 schrieb Wojtek SWIATEK:
>
> My question is the following: what exactly should I do to write the
> MBR to /dev/hda1 using the config above. In practical terms I can
> access it by mounting /dev/sda1 at /mnt (and then access the config
> file via /mnt/boot/grub/grub.conf if needed).
> Specifically, is (hd0) currently pointing to the internal or external
> drive? In other words when I issue a
>
> # grub --config-file=/mnt/boot/grub/grub.conf
> grub> root(hd0,0)
> grub> setup (hd0)
>
> will I be writing the MBR with the new (adapted to a boot from the
> internal drive sda) config to the internal drive?
>
> I would like, obviously, to avoid writing the MBR on my external drive
> which has a working MBR.
It's better to use grub-install if you can.
/boot/grub/device.map tells which device is hd0
I have never used grub-install (only grub in much simpler configurations) and I will give it a try.
Is there a way to instruct grub-install to use the configuration from another place than the current /boot/grub/grub.conf? In my case I would like it to use the info at /mnt/boot/grub/grub.conf as they cover the future setup (boot from a single internal drive). Maybe chroot to /mnt would be a way to go? (in that case /boot would indeed refer to the future /boot and grub-install could now take its install info from there)
It is but just for the utilities.
loaded from.
Whereas device.map is created by Linux device order which can be
different.
So sometimes you have to fix device.map yourself.
OK thanks.
Thank you for your help -- would anyone answering be kind enough to cc: by real address, I do not get for some reason emails directed to the mailing list (including my submission). I contacted teh owner with this issue.