SOLVED lm20.3 Cinn: Grub menu errors

[sadhu]

I was trying to update the kernels on my lm20.3 laptop.

The grub boot menu shows LM20.1, not the installed 20.3; grub advanced shows these kernels: 5.4.0-70, -67, and -58. The update manager and synaptic both show 5.4.0-70, -124, and 5.15.0.46 as being installed.

I run update-grub:

Code: Select all

$ sudo update-grub
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/50_linuxmint.cfg'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.15.0-46-generic
Found initrd image: /boot/initrd.img-5.15.0-46-generic
Found linux image: /boot/vmlinuz-5.4.0-124-generic
Found initrd image: /boot/initrd.img-5.4.0-124-generic
Found linux image: /boot/vmlinuz-5.4.0-70-generic
Found initrd image: /boot/initrd.img-5.4.0-70-generic
  /dev/sdb: open failed: No medium found
  /dev/sdb: open failed: No medium found
Found Ubuntu 20.04.2 LTS (20.04) on /dev/sda6
done

But the grub boot menu is unchanged.

What do I need to do in order for grub to show lm20.3, to boot into kernel 5.15.0-46 by default, and show the proper older kernels?

Thank you
-Sadhu

[senjoz]

It looks like Ubuntu 20.04.2 is controlling booting. If you boot in that Ubuntu, run sudo update-grub and reboot, do you get correct boot options?

To get LM 20.3 to control booting you should reinstall Grub. See this.

[sadhu]

It looks like Ubuntu 20.04.2 is controlling booting. If you boot in that Ubuntu, run sudo update-grub and reboot, do you get correct boot options?

YEP!

Problem solved.

Thank you very much. I'm so glad I didn't have to try to reinstall grub.



-Sadhu