Changing grub default boot order

[Jim Byrnes]

On 03/28/2013 03:14 PM, Colin Law wrote:
> On 28 March 2013 17:45, Jim Byrnes <jf_byrnes at comcast.net> wrote:
>> On 03/28/2013 12:12 PM, Colin Law wrote:
>>>
>>> On 28 March 2013 15:47, Jim Byrnes <jf_byrnes at comcast.net> wrote:
>>>>
>>>> I upgraded from 10.04 to 12.04 by installing 12.04 on a different hard
>>>> drive
>>>> and dual booting.  Now I would like to make 12.04 (sdb) the default.
>>>> This
>>>> link [1] suggests using grub-customizer [2]. Does anyone have any
>>>> experience
>>>> with this app?
>>>
>>>
>>> How did you manage to install 12.04 and not end up with it as the
>>> default?  The question is relevant because you might be best to
>>> reinstall grub from 12.04.
>>>
>>> Colin
>>
>>
>> I put a new hard drive in the machine and disconnected the one with 10.04 on
>> it.  I then installed 12.04 on the new drive.  I wanted to keep the info on
>> 10.04 available.  I had planned on using a drive caddy. At this point I had
>> completely forgotten about dual-boot.  Once I had both hard drives hooked up
>> this is what I ended up with.  Maybe there was a way to have 12.04 as the
>> default but I didn't realize exactly what would happen.
>
> I am going to suggest an alternative solution.  The problem, I think,
> is that it is booting off the old disk.  I suggest changing the boot
> sequence so that it boots off the 12.04 disk.  If you find that you do
> not then get the boot option of 10.04 then run sudo update-grub.
>
> Colin
>

Yes it boots off of the original hard drive. 10.04 is on it as sda and 
it sits at the top of the grub menu.

Are you suggesting that I fiddle with the bios.  I don't know if there 
is an option to select which hard drive to boot from. I had thought 
about it but never followed up.

Regards,  Jim