Upgrading Ubuntu 22.04 to 24.04 results in Grub issue

Title: Resolving Grub Issue After Upgrading Ubuntu 22.04 to 24.04 on a Dedicated Server with 21TB NVMe Drive using Tabula

In this article, we will discuss how to resolve a Grub issue that may occur after upgrading Ubuntu 22.04 to 24.04 on a dedicated server with a 21TB NVMe drive using Tabula.

Understanding the Issue

After upgrading Ubuntu, the system may fail to boot due to a Grub issue. This problem can occur if the Grub configuration files are not updated correctly during the upgrade process.

Preparation

Before proceeding, ensure you have a backup of your system.

Booting into Recovery Mode

1. Restart your server.
2. During the boot process, press Esc or Shift to display the GRUB menu.
3. Select the advanced options for Ubuntu and press Enter.
4. In the GRUB menu, select Recovery mode and press Enter.

Chroot into the Root File System

1. In the recovery menu, select Root access and press Enter.
2. Type mount -o rw,remount / to remount the root file system read-write.
3. Type chroot / to change the root directory to the root file system.

Updating Grub

1. Update the Grub package:

apt-get update
apt-get install grub-common-lts grub-lts

Regenerating Grub Configuration

1. Regenerate the Grub configuration file:

update-grub
update-initramfs -u

Exiting Chroot and Rebooting

1. Exit the chroot environment:

exit

2. Type reboot to reboot your server.

Summary

In this article, we discussed how to resolve a Grub issue after upgrading Ubuntu 22.04 to 24.04 on a dedicated server with a 21TB NVMe drive using Tabula. We covered booting into recovery mode, chrooting into the root file system, updating Grub, regenerating the Grub configuration, and exiting the chroot environment to reboot the server.

References

• Ubuntu Documentation: Boot options
• Ubuntu Documentation: Recovery mode
• Ubuntu Documentation: Chroot
• Ubuntu Documentation: Upgrading
• Ubuntu Documentation: Grub
• Tabula Documentation: Ubuntu 22.04 to 24.04 Upgrade Guide