π ~1 min read
Table of contents
Symptom & Impact
System cannot boot operating system and stops at grub rescue shell.
Environment & Reproduction
Ubuntu 14.04 dual-disk or partition-modified environments.
Root Cause Analysis
Bootloader references invalid partition paths after disk changes.
Quick Triage
Identify available partitions and locate /boot or root filesystem.
Step-by-Step Diagnosis
Inspect GRUB device map and verify partition UUID continuity.

Solution – Primary Fix
Reinstall GRUB from chroot and regenerate grub.cfg cleanly.
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Solution – Alternative Approaches
Use Boot-Repair utility when manual recovery is not practical.
Verification & Acceptance Criteria
GRUB menu appears and Ubuntu loads normally across reboots.
Rollback Plan
Reapply previous boot order and restore saved bootloader artifacts.
Prevention & Hardening
Coordinate partitioning changes with bootloader maintenance procedures.
Related Errors & Cross-Refs
Compare with initramfs errors and UEFI entry corruption.
Related tutorial: View the step-by-step tutorial for Ubuntu 14.04 LTS.
View all Ubuntu 14.04 LTS tutorials on the Tutorials Hub β
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
GNU GRUB manual and Ubuntu recovery documentation.
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