EC2 Boot & Kernel Failure Diagnostics

Root cause data extracted from AWS official troubleshooting documentation and kernel engineering references. Click your symptom below to get the exact rescue procedure.

🚨 Step 1: Which boot failure symptom are you experiencing?

Select the scenario that best matches your instance's current state:

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Quick Reference Table

#	Scenario	Key Error Signal	Primary Fix
1	EFI Partition Boot Hang	Dependency failed for /boot/efi	Comment out EFI entry in /etc/fstab via rescue instance
2	Dracut Poweroff on Panic	System is powering down	Remove rd.emergency=poweroff rd.shell=0 from GRUB config
3	Serial Console Black Screen	console [ttyS0] enabled + blank	systemctl restart serial-getty@ttyS0
4	Kernel Deadlock / NMI	NMI received for unknown reason	aws ec2 send-diagnostic-interrupt + kernel.unknown_nmi_panic=1