Editing grub boot menu, how to save?

[g.lip at gmx.com]

I just want to change the label so that it is unmistakable *what* is going to
boot by that line.
Currently my top line only says "Ubuntu" and since there are multiple Ubuntus
this is not very user friendly!


Any ideas?



Go to *all* your Ubuntu OS's and at /etc/lsb-release and /etc/os-release, change DISTRIB_ID and NAME entries to whatever you like to distinguish them apart.
Then go that Ubuntu OS that you wish to be the grub that boots at start up. Then do 'sudo-update-grub'