So every now and then CentOS pushes out updates to GRUB, and it changes the grub configuration. Unfortunately for me, this means that when I close the lid of my laptop, and then reopen it, the thing turns on and goes back to the "GRUB which operating system and kernel do you want to use" screen. Which is *not good* because it means I could lose work and it is just generally inconvenient. These are the steps that fix it for me. They mostly consist of "copying and pasting from stack overflow" but putting it here means that I know exactly where to find it. So the stack overflow solution didn't work, so I had to spend an hour with the linux kernel parameter docs.
Well, I was planning to do this a bit later on... but circumstances have forced me to do it now. I wanted to write this "mini series" while upgrading to a larger hard drive. So you may have guessed that this is a log of how I set up my laptop. And this is happening now, because I accidentally DD'd over the boot partition on my computer, and a bit into the windows partition. Of course, since I'm considering upgrading, I might as well get a practice run, and perhaps script out some of what I do