📖 ~1 min read
Table of contents
Symptom & Impact
Server boots to grub rescue and cannot mount root filesystem.
Environment & Reproduction
Typically follows disk replacement, cloning, or partition edits.
Root Cause Analysis
grub.cfg or fstab references stale UUID values.
Quick Triage
Verify actual device UUIDs from rescue shell before edits.
Step-by-Step Diagnosis
Compare blkid output with fstab and GRUB config entries.
Solution – Primary Fix
Correct UUID references, run update-grub, and reinstall bootloader.
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Solution – Alternative Approaches
Use stable filesystem labels when UUID churn is expected.
Verification & Acceptance Criteria
Host boots normally without grub rescue fallback.
Rollback Plan
Restore previous boot config from backup if boot path worsens.
Prevention & Hardening
Document partition changes and validate boot config post-maintenance.
Related Errors & Cross-Refs
Related to initramfs root not found and filesystem mount failures.
Related tutorial: View the step-by-step tutorial for debian-10.
View all debian-10 tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
GNU GRUB manual and Debian boot troubleshooting docs.
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