Grub 2 in Jaunty/Karmic can break double boot configuration

[Goh Lip]

Lucio M Nicolosi wrote:

> Tried to install Karmic at sda1 (ext4-primary) but there was another
> Ubuntu instance at sda9 (ext3-secondary). Since ext4 and grub legacy
> don't get well together, in fact they hate each other, and install
> aborted before rebooting, leaving out grub2, Karmic ext4 became
> "invisible" to grub legacy till I managed to install grub2 on Jaunty,
> after what they all lived happily forever, etc.
> 

You can still boot Karmic, (ext4, grub2) using grub legacy using 
chainloading.

root (hd0,8)
chainloader +1
boot


> So I guess the safest way to place Karmic together with a previous
> release is first, update to grub2 and them install Karmic. And of
> course, if you are not as dumb as me, read thoroughly
> http://grub.enbug.org/Manual *before*.
> 
> But still didn't figure how I managed to break two Karmic installs in a row.


But, yes, I think it's better to change all instances to grub2.

Regards,
Goh Lip