Issue In my laptop, Windows 11 has an issue with rebooting. Each time it tries to reboot, I immediately run into a blank screen. However, rebooting works perfectly fine within Ubuntu. Thus, I wanted to set Ubuntu as First preference instead of Windows. Setting Ubuntu as First Preference I went to boot manager and changed preference order anu@laptop:~$ sudo efibootmgr [sudo] password for anu: BootCurrent: 0001 Timeout: 0 seconds BootOrder: 0004,0001,0003,9999 Boot0004* Windows Boot Manager......... Boot0001* Ubuntu........ Boot0003* Solid State Disk........ Boot9999* USB Drive (UEFI)............ anu@laptop:~ sudo efibootmgr 0001,0004,0003,9999 Attempts Turning off Fast Startup Setting Windows as the default option in Ubuntu GRUB Giving Windows first preference in Startup Result: It didn't work. Current Status Thus, I have postponed this issue until I have time to work on it again. And I set Ubuntu as the first preference in BIOS, so it will automatic...