Verifying shim SBAT data failed: Security Policy Violation

[jolsen71]

When trying to boot MediaCat on a modern computer with BIOS secure boot enabled, the following error happens:

Verifying shim SBAT data failed: Security Policy Violation  
Something has gone seriously wrong: SBAT self-check failed: Security Policy Violation 

In researching that message, it seems like some steps need be take to maybe base this on a newer OS image and/or updated boot (MBR, EFI, etc) configuration. That said, it might be completely unrelated to the issue with MediaCat generating this error.

While it is a different product, users were getting the same error on boot. One fix is discussed here:
https://www.reddit.com/r/Ventoy/comments/1bn1tky/comment/l1kra2e/
and more discussion here:
ventoy/Ventoy#2692 (comment)
I hope these discussions help with a speedy fix and not a red herring.

Thank you for making and releasing MediaCat