I have recently installed Kubuntu 12.04 into a separate partition, keeping 10.04 in another partition until I was confident of making the move. The boot menu offers me 10.4 and then 12.04. I would now like to reverse those so that 12.04 becomes the first offering. Some notes I have (probably from past instruction) say to edit the /boot/grub/menu.lst file but in 12.04 I do not find that file - in fact a search does not find it anywhere. Presumably I should be looking for something else - could anyone say what that should be, please?
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if 10.04 is the first option in your boot menu I would say that 10.04 is still controlling grub and you should look for the /boot/grub/menu.lst file their (that is in 10.04).
12.04 uses a newer grub and the "menu.lst" file is no more ,,,,now it is /boot/grub/grub.cfg but you dont edit it by hand any more ,,,,,,well not usually
when you installed 12.04 where did you tell the installer to put grub?
and for your reading enjoyment some about the new grub Grub2 - Community Ubuntu Documentation
VINNYi7 4core HT 8MB L3 2.9GHz
16GB RAM
Nvidia GTX 860M 4GB RAM 1152 cuda cores
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Vinny is at least partially correct and likely totally correct but only if you upgraded to 10.04 from an earlier version. If you installed 10.04 from scratch, you're using GRUB2 and no longer have a menu.lst file. It has been replace by /boot/grub/grug.cfg and is not intended to be edited by hand. You can edit it if you choose, but the edits will be wiped out every time you update grub.
Is your intent just to have the list in a particular order or to change the defaulted boot item?
I will assume as Vinny did that your 10.04 install is hosting grub at this time. If you're planning on moving to 12.04 soon, I suggest you boot to 12.04 and make it the host for grub. This will put 12.04 first in the menu and the default boot install, enable you to delete your 10.04 install sometime down the road without leaving you system up-bootable, and make it easier when 12.04 has a kernel/driver update (likely to happen more often for 12.04 than 10.04 at this point).
To do this:Boot to 12.04
Open a terminal (konsole)
Enter: sudo grub-install /dev/sda && sudo update-grub
Reboot
I also assumed you're booting to /dev/sda.Comment
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Boot menu
To do this:
Boot to 12.04
Open a terminal (konsole)
Enter: sudo grub-install /dev/sda && sudo update-grub
Reboot
Thank you - that did it!Comment
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