Ubuntu
debian-installer package

  1. Bug #46520
  2. Comment #35

Comment 35 for bug 46520

Revision history for this message
Tom Bruno (crweb) wrote : Re: [Bug 46520] Re: Grub installs to wrong drive's MBR in default install. No way to change in standard installer.

On Fri, Dec 19, 2008 at 5:21 AM, xcut <email address hidden> wrote:

> I encountered the same problem (grub error 2) after installing, and this
> cost me many hours. I considered recommending Ubuntu for some non-
> technical friends, but it seems that this still won't be an option.
>
> Anyway, here is a complete summary:
>
> - I have an internal NVIDIA mirror RAID with Windows on it. Touching that
> RAID or writing anything on it was not an option
> - Decided to install Ubuntu to external USB disk
> - Installed Ubuntu 8.10 using the alternate installer
> - Created 100mb boot partition (sdc1), 100 gig root (sdc5) and 5 gig swap
> (sdc6)
> - Selected "do not install GRUB to default location" and forced install to
> /dev/sdc (the MBR of the external drive)
>
> Then rebooted, and put the external drive before the internal in the
> boot order.
>

By changing the drive order you made the drive stop being /dev/sdc (hd2,0)
and it became /dev/sda (hd0,0)

What you want to do is specify the boot drive usually with a F12 menu in the
bios. Not change drive order which is what causes grub to fail.