I am running a self-managed VPS, hosted by a local (Australian) company; recently I've upgraded in quick succession from 14.04 to 16.04 to 18.04. But through all these upgrades, although I've collected plenty of new linux kernel images, the grub default has remained on the old 3.13 kernel from Ubuntu 14.04. Using
update-grub simply adds kernel lines to
grub.conf which is a symlink to
menu.lst; it doesn't change the default.
I'm a bit nervous to make sweeping changes by hand to the
menu.lst file in case I end up with an unbootable machine - I can't use a rescue disk as I don't have physical access to it.
What's my best option here?