small problem with 10.04 -> 12.04 upgrade

[Colin Law]

On 28 August 2012 19:35, william drescher <william at techservsys.com> wrote:
> On 8/28/2012 8:59 AM, Colin Law wrote:
>>
>> On 28 August 2012 13:44, william drescher <william at techservsys.com> wrote:
>>>
>>> On 8/27/2012 2:43 PM, Thufir wrote:
>>>>
>>>>
>>>> william drescher <william <at> TechServSys.com> writes:
>>>>
>>>>> What went wrong and can I fix it ?
>>>>> How ?
>>>>>
>>>>> bill
>>>>>
>>>>>
>>>>
>>>> I could be wrong, but I think you just have a small grub config
>>>> "problem",
>>>> I
>>>> wouldn't even call it that.  Grub is seeing two kernels and asking which
>>>> one you
>>>> want to use.  I think.
>>>>
>>>> That's normal when there are multiple kernels.
>>>>
>>>>
>>>> -Thufir
>>>>
>>>>
>>>>
>>> Not being a grub maven (or even a newbie) how do I tell grub only to use
>>> 12.04 ?
>>
>>
>> Is the one that automatically boots if you leave it a few seconds the
>> right one or do you have to manually select one lower down?
>>
>> Colin
>>
>
> The correct one boots.

In that case all you need to do is to tell it not to bother waiting
for you to decide which one you want.  If you have a look at
https://help.ubuntu.com/community/Grub2 you will find lots of useful
information.  You need to edit /etc/default/grub but you need to do it
as root so in a terminal run

gksu gedit /etc/default/grub

Personally I like to have the menu appear for just a couple of seconds
so that it is easy to catch (by hitting down arrow for example) so I
change GRUB_TIMEOUT to 2 or 3, then when you boot it will show the
menu but then quickly boot if you do nothing.  If you set it to 0 then
it will not wait at all, which may be what you want.  Having saved the
file then run

sudo update-grub

which reads the edited file and sets up the system stuff to do what
you want.  That's it (hopefully).

Colin