Oracle UEK Module Missing After Dracut Initramfs Rebuild

📖 ~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 fails early boot because root disk or NIC driver is absent.

Environment & Reproduction

Custom dracut configuration rebuilt initramfs without host-only required modules.

Root Cause Analysis

Driver omission in initramfs prevents device discovery at boot time.

Quick Triage

Inspect dracut logs and lsinitrd contents for expected kernel modules.

Step-by-Step Diagnosis

Verify dracut.conf include/exclude directives and kernel module availability.

Solution – Primary Fix

Rebuild initramfs with add_drivers and install to correct kernel entry.

Solution – Alternative Approaches

Disable aggressive host-only trimming where hardware variability exists.

Verification & Acceptance Criteria

System boots normally and required devices appear during initramfs stage.

Rollback Plan

Boot previous kernel/initramfs pair from GRUB fallback entry.

Prevention & Hardening

Automate lsinitrd validation before production reboot.

Related Errors & Cross-Refs

dracut-initqueue timeout, cannot find root filesystem.

Related tutorial: View the step-by-step tutorial for oracle-linux-10.

View all oracle-linux-10 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

dracut and Oracle UEK boot troubleshooting documentation.