I have on my machine 3 linux that i installed. On installing the second linux (ubuntu 17.04) i define the GRUB as i needed.
I installed the 3rd linux (ubuntu 16.04) and its override my GRUB that i edit and its loading other GRUB
How to make the first GRUB to be loaded ?
I try the run the commands below when i running the main linux ( 17.04 ) but nothing work and i still get the bad grub (grub of ubuntu 16.04) that i dont want
sudo update-grub gksu update-grub