How to Fix Bigsur unable to boot

How to Fix Bigsur unable to boot

This mini-guide provides a structural approach to troubleshoot and fix the issue.

Prerequisites

• Confirm your hardware specifications (CPU, GPU, Motherboard).
• Ensure you have a bootable recovery USB and backup your EFI.

Fix Steps

1. Boot with -v keepsyms=1 debug=0x100 to identify the exact kernel panic.
2. Validate your config.plist using ocvalidate.
3. Ensure your EFI matches the Dortania guide specifications for your CPU generation.

Verification

• Reboot and verify if the functionality is restored and stable under typical usage.

Original Question:

I had my bigsur setup for last year plus without problem. Just recently it wouldn't boot. I use open efi. I did no changes and it suddenly wouldn't start. I am guessing my Samsung m2 got corrupted... if I boot with a USB stick then I can see the boot options and then I see a kernel panic. I have attached screenshots. How can I get to recover my system? Any guidance is appreciated.

I have many important documents and photos there. To make matters worse my time machine backup isn't working...

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Author: PrasadK