GRUB badly broken during upgrade

[NoOp]

On 10/08/2012 03:21 PM, Kevin O'Gorman wrote:
> On Mon, Oct 8, 2012 at 3:03 PM, Kevin O'Gorman <kogorman at gmail.com> wrote:
...
>> The grub menu shows 11 items.  Kernels are in normal/rescue pairs
>> 1,2) Unusable boot to a 3.0.0 kernel.  the "linux" line explicitly has
>> root=/dev/sda7 which may explain its being dead; the drive with a
>> partition 7 more frequently comes up as sdb, but has been sda in the
>> past.  3.0.0 is an appropriate kernel for Ubuntu 11.10, which is
>> what's on sdb7.
>> 3) "Previous versions" legend line
>> 4,5) memtest.  This operates normally
>> 6,7) 3.2.0-31-pae kernel.  root=UUID of the sdb2 partition.  That's
>> what i'm running now.  free(1) shows 8GB ram.
>> 8.9) as 6&7, but it's the generic kernel which only sees 3 GB ram
>> 10,11) as 8&9 (generic) an older kernel version.
>>
>> I think 1&2 may be fixable if I can get them to use the UUID.  In GRUB
>> 1 I could do this manually.  I don't know how to do it in GNU GRUB.
>> I'm going to ditch 8-11 as useless.
> 
> I ditched the generic kernels and rebooted.  Boot was normal (of
> course I had to select line 6).  Lines 8-11 are still there, which
> makes no sense because the kernels they refer to are gone.  I have no
> idea how to fix this, but it's not important.
> 
> What would be much better would be to make lines 1&2 functional.
> Then it would be nice to swap the contents of 1&2 with 6&7.
> 

Why don't you just reinstall grub to whichever device(s) you boot to? I
fail to understand using SuperGrub et al when this list is full of
advise on how to simply reinstall grub/grub2 from a LiveCD. Ditto for
checking UUID's.