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Fixing “Invalid Signature Detected” Error in Dual Boot

· 2 min read
Haruka Yamamoto
A person and a dream

Context

So, I was trying to install Battlefield 2042 and found out that the latest update requires Secure Boot to be enabled.
No big deal — I use dual boot (Zorin OS for work, Windows 10 for gaming), so I jumped into my X99 Qiyida D4 BIOS and enabled Secure Boot.

The result?
Linux completely refused to boot and instead displayed this lovely message:

“Invalid signature detected. Check Secure Boot policy in Setup”

Invalid signature detected. Check Secure Boot policy in Setup

Great. Here we go again...