Ubuntu 22.04 LTS GRUB Rescue no such partition at Boot

📖 ~1 min read

Table of contents

1. Symptom & Impact
2. Environment & Reproduction
3. Root Cause Analysis
4. Quick Triage
5. Step-by-Step Diagnosis
6. Solution – Primary Fix
7. Solution – Alternative Approaches
8. Verification & Acceptance Criteria
9. Rollback Plan
10. Prevention & Hardening
11. Related Errors & Cross-Refs
12. References & Further Reading

Symptom & Impact

System stops at grub rescue prompt and cannot boot Ubuntu 22.04 LTS.

Environment & Reproduction

Common after disk reordering, partition edits, or failed dual-boot changes.

Root Cause Analysis

GRUB core image points to old partition UUID/path no longer matching current layout.

Quick Triage

Identify root and boot partitions from rescue shell or live media session.

Step-by-Step Diagnosis

From live environment, mount system partitions and inspect existing grub configuration.

Solution – Primary Fix

Chroot into installed system and reinstall GRUB to correct disk target.

Solution – Alternative Approaches

Use Boot-Repair tool from Ubuntu live session when manual recovery is not practical.

Verification & Acceptance Criteria

System boots directly to Ubuntu without entering grub rescue prompt.

Rollback Plan

Restore disk image backup if partition table corruption is detected.

Prevention & Hardening

Avoid ad-hoc partition edits and keep bootloader recovery media ready.

Related Errors & Cross-Refs

Associated with fstab UUID mismatches and initramfs boot drops.

Related tutorial: View the step-by-step tutorial for Ubuntu 22.04 LTS.

View all Ubuntu 22.04 LTS tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

See Ubuntu GRUB recovery guide and official live-chroot troubleshooting steps.