Edited grub - cant boot LL

[gold_finger]

Just a question Goldfinger. Won't this break something if another Linux system is installed from an ISO afterwards, say for instance he wanted to add Mint to the disk? I would guess that some installers would have to run default settings just to install in some cases. Not sure. Just a thought.

TC       

No, the changes made in my post above will not affect ability to boot other added distros as long as LL remains in charge of booting.  However, if another distro's grub got installed to the MBR (replacing LL's) then same problem would occur in that distro's grub and the modifications above would have to be duplicated there.

In addition, certain custom modifications to LL's grub (by the development team) will cause an error message when another distro's grub tries to boot LL.

Therefore, in all multi-boot setups involving LL, leaving LL in charge of booting is the best way to go -- regardless of the particular situation in this thread.  Basically, a person should just direct any other distro's grub installation to its own root partition instead of the MBR of the hard drive.  Then just run sudo update-grub from a terminal in LL to add the new distro(s) to the boot menu.