Join Log in
Score:1
Talha Nadeem avatar Ubuntu

GRUB menu after upgrade to Windows 11

us flag
Talha Nadeem

I am using Ubuntu 20.04 LTS along with windows. Recently upgraded from Windows 10 to 11. Now the GRUB boot menu is lost and the laptop's booting by default to Windows 11

How to recover grub?

I have an SSD for Ubuntu and a HDD for windows i.e., they are both on different hard drives.

2299
0 + 0
ssd
Score:1
ChanganAuto avatar Ubuntu
us flag
ChanganAuto

That Windows and Ubuntu are in different drives is irrelevant.

The Windows product upgrade simply changed the boot order to itself.

All you need to do now is open UEFI settings > Boot menu and change it back to "Ubuntu". Then boot Ubuntu and run sudo update-grub to... Update Grub! (probably not necessary - The upgrade Windows 11 should be using the same bootloader - but strongly recommended, just in case).

This is how the boot process works, and consequently how a multi-boot system should be managed, in any modern computer with UEFI, the firmware that replaced the 1981 BIOS more than a decade ago.

PS - If it were a BIOS machine - or Legacy installations in UEFI - not the case here otherwise you wouldn't be able to upgrade to Windows 11 (no longer supports BIOS/Legacy) - then you'd need to reinstall Grub from a live session because it would have been overwritten by the Windows installer.

But with UEFI the boot process is different, many different bootloaders can coexist in the same system, all stored in the ESP (EFI System Partition) and that's why the location of the system partitions of different OSes, in the same or different drives, is now irrelevant.

0 + 0
Tom avatar
in flag
Tom
I struggled a bit to understand what to do exactly but figured out that at the very bottom of my "Boot" page in the UEFI there was a list of bootable items among all that text. I had to move Ubuntu from 2nd to 1st place.
2
Reply
ธงชาติไทย
Elon Musk
I sit in a Tesla and translated this thread with Ai:

mangohost

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.