Cant Boot: Invalid Signature Detected Check Secure Boot policy in setup


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Hi,

Windows 11 boots fine, only when i select USB stick with unRAID i get this error

Its z690 board

I tried disabling secure boot but the PC stuck on boot, somehow with secure boot disabled it wont read Hard drives attached to SATA cards and wil get stuck on boot A2 error, if i disable them it will boot fine, if re-enable secure boot it will boot fine [into windows]

 

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  • Solution

Update:If this happens to you, open BIOS go to security> secure boot, set to custom

There should be an option to import profile/policy, go to USB>EFI> some_file_name.efi [the unRAID USB has to be plugged-in]

click on it, its just ONE file with .efi, so dont worry, it will import whats needed, save bios and reboot

If you made a mistake and clicked on another file, it will show error and let you do it again.

The way i found it, i clicked Import on EVERY file one by one until i found the right one.

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