Grub2 and multiple boot different ubuntu versions

[Colin Law]

On 25 March 2010 14:56, Karl Larsen <klarsen1 at gmail.com> wrote:
> On 03/25/2010 07:57 AM, Colin Law wrote:
>
> On 24 March 2010 20:44, Karl Larsen <klarsen1 at gmail.com> wrote:
>
>
> ..
>         Grub2 makes changing the list VERY difficult. In the bad old
> days of Grub1 I would put menu.lst in any editor and , in this case make
> Karmic number 0. But I have seen guys who say even with Grub2 you can
> edit grub.cfg with great care and it will work. I have not tried this
> yet. But will.
>
>
> Karl, I suggest you have a look at
> https://help.ubuntu.com/community/Grub2.  It is very helpful.
>
> Colin
>
>
>
>         I did that and found it a very long document with things like this:
>
> GRUB SAVEDEFAULT= If set to true this setting will automatically set the
> last selected OS from the menu as the default OS on the next boot.
>
> No commands need be run to set the default OS.
> Any time a menuentry is manually selected from the GRUB2 menu, it becomes
> the default OS.
>
>     This is a typical Grub2 statement.  What is the last selected OS???

It means the one you selected last time, ie the one you are currently
booted into.  So if you select one to boot then reboot it will default
to the one you just rebooted from.  Or to put it another way, and
rather more succinctly, any time a menuentry is manually selected from
the GRUB2 menu, it becomes the default OS.  That sounds familiar, I
must have read it somewhere before.

Colin

>
>
> 73 Karl
>
>