final steps notes

[Kyu]

Not an issue, but a note for for future users(maybe even me?)

For the second to last step, use grub-mkconfig instead of grub2-mkconfig, it works just as fine. Cycle through /boot/efi/EFI to find your grub.cfg

For the optional step, do it anyways.

Run sudo update-initramfs -u

just in case, to save yourself a reboot, and if you have different versions of the same kernel installed, (e.g generic, lowlatency etc), run

sudo update-initramfs -u -k all to run it on all versions.