This question sounds noob to me but I am confused after being away from computing for some time (maybe I have had serious concussions or a brain tumor).
I bought a laptop some while ago and thought it was cool to let the salesmen dual boot it with some Ubuntu LTS. Now I am stuck with Ubuntu 17.10 and I do not have a clue how to fix this. Some features I need (e.g. RStudio) are problematic on this Ubuntu version and I just like feeling comfort with a LTS.
I think the easiest way is to just add 16.04 to a new partition but I can not even find out how to add partitions in linux and nothing comes up when writing grub in the dashboard.
I have often set up dual-boot with Windows and various distros but for some reason I am stuck now.
