user@ubuntu:~$ journalctl -xe | grep "ALERT! UUID=... does not exist. Dropping to a shell"

Critical

ALERT! UUID=... does not exist. Dropping to a shell_ (Ubuntu)

ALERT! UUID=... does not exist. Dropping to a shell

Ubuntu · Boot/GRUB

If your Ubuntu machine is throwing ALERT! UUID=... does not exist. Dropping to a shell, the system has flagged a fault identified as "ALERT! UUID=... does not exist. Dropping to a shell". Understanding the root cause helps you avoid an unnecessary reinstall.

What Actually Happened

System boot halted: the initramfs cannot find the root partition UUID referenced in its boot configuration.

Symptoms

Linux boot halted with message: 'ALERT! UUID=... does not exist. Dropping to a shell'

Common Causes

Boot condition: the initramfs cannot find the root partition UUID referenced in its boot configuration

How to Fix It

01
Boot from a Live USB media
02
Chroot into installation and run:
sudo update-grub
03
Reinstall bootloader:
sudo grub-install /dev/sda

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