CentOS Stream 10 – Common Problem 109 – Diagnosis and Fix

📖 ~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

GRUB menu disappears or boots to BIOS shell after kernel update.

Environment & Reproduction

Seen after grub2-install on wrong device or EFI variable corruption.

Root Cause Analysis

GRUB images are missing on ESP or boot order has been rewritten.

Quick Triage

Inspect efibootmgr -v and contents of /boot/efi/EFI/centos.

Step-by-Step Diagnosis

Boot rescue media and verify grubx64.efi and grub.cfg locations.

Solution – Primary Fix

Reinstall grub2-efi-x64 and run grub2-mkconfig -o /boot/efi/…/grub.cfg.

Solution – Alternative Approaches

Recreate boot entry with efibootmgr –create when EFI vars are lost.

Verification & Acceptance Criteria

Default kernel boots automatically without manual EFI shell input.

Rollback Plan

Restore prior bootloader from rescue if reinstall corrupts the ESP.

Prevention & Hardening

Snapshot ESP contents prior to firmware or major package updates.

Related Errors & Cross-Refs

Often related to secure boot and shim signing issues.

Related tutorial: View the step-by-step tutorial for centos-stream-10.

View all centos-stream-10 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

GRUB 2 manual and CentOS Stream installer docs.