I have both installed on my harddrive, and I use 22.04 (jammy jellyfish) daily, but figured I'd boot into 23.04 (lunar lobster) one last time before deleting it since its end of life. Now when I boot it just boots automatically into 23.04 without a boot loader. I tried manually booting into GRUB, and the option to boot 22.04 is not there. When I go into the BIOS, its not there either, but when I boot into 23.04 and check Devices and Locations, my 22.04 partition is still there.
Also, after booting lunar, my grub menu looks different. It use to be on the top on the screen and now its on the middle of the screen and the resolution is different.
Why did booting into lunar seemingly change my grub, and how do I get back the option to boot into my 22.04 partition?
