Greetings
I have both Windows 11 and ubuntu installed on my machine. After windows update Im unable to boot into grub again. It goes strait into windows boot manager. Only way i can boot is using supergrubdisk. Ive also installed boot-repair but its not giving me recommended repair and doesnt show anything under grub.
here is the boot-repair log
Any help would be appreciated, Thanks clay
If you are lucky you can still select the Ubuntu option in your UEFI boot menu, or even make it the default in the UEFI setup menu again. If there is no option to configure the boot order there, you can use uefibootmgr from a live image.
Hi! Just a note for what it’s worth, I’d prioritize checking with resources like https://askubuntu.com/ for issues like this, since what you’re experiencing involves some deeper-down operating system components than what KDE software typically touches. You may be more likely to find folks with knowledge of troubleshooting Ubuntu issues there 
well, if you have ubuntu grub-customizer still works. I used it the other day to downgrade Oracular from the latest 6.15 rc3 kernel to rc2 (it wasn’t powering down properly).
sudo add-apt-repository ppa:danielrichter2007/grub-customizer -y
sudo apt install grub-customizer
grub-customizer
It’ll prompt you for credentials if you invoke it as user.
I guess if the grub is damaged there’s Systemrescue .