[olug] Ubuntu drive assignment

Sam Tetherow tetherow at shwisp.net
Tue Oct 12 02:17:35 UTC 2010

Post bootstrap you can assign drives using udev

Pre bootstrap you can fiddle in bios

grub remap drive order from bios as well.

grub will also allow you to pass a uuid to the kernel for the root

Sam Tetherow

On Mon, 2010-10-11 at 20:38 -0500, Jordan Fox wrote:
> Sorry for not finding the answer yet on my own, and possibly sending
> the email before I've done another couple hours of research...  I just
> updated from Xubuntu 10.04 to 10.10.  In the process, ubuntu is now
> detecting my main boot drive as /dev/sdb instead of /dev/sda... after
> updating my /etc/fstab file to use all UUIDs instead of drive letter
> assignments I can boot into the new kernel (I was able to boot into an
> old kernel which properly detects my drive letters - which made the
> problem easy to discover and fix with the UUIDs).  /dev/sda isn't
> assigned to any drive as far as I can tell (fdisk won't recognize it
> as a device).  At this point, it's not really an issue after fixing
> the above, but it is annoying.  Having used Ubuntu for the past
> several years, my command line fu isn't what it used to be when I ran
> Gentoo.  Plus, I don't know much about Upstart or Grub2.
> Anyone have any ideas.  I think I remember seeing a similar thread in
> olug a number of months back.
> Thanks,
> Jordan

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