Problem trying to get config to work in Preempt Rt Stretch

Ok you are booting from a HDD\SDD with grub ?

At the bottom of the Grub screen it should have something along the lines of press e to edit

Same deal more or less.
Choose your option
press e (i think) to edit
input is the same

Then F10 to boot

This page is a bit more succinct:
askubuntu.com/questions/19486/how-do-i-a...ernel-boot-parameter

awesome... i had to crash last night didn't get a chance to try this and have Mothers day brunch in a few but will give this a go afterwards this afternoon, this looks more my style of comfort to try! thanks Ozzyrob!! I will report back my findings!