A MOK (Machine Owner Key) is a key which can be used for signing UEFI boot loaders to get them ready for Secure Boot.

• An error occurs if Secure Boot is enabled and your boot loader has an unknown signature.

Confirm OK with Enter key.

Note: The error message of newer versions is Verfication failed: (0x1A) Security Violation

• Perform MOK Management

Press any key.

• Select MOK

Note: Select ../ to go back to previous screen if needed.

• Enroll MOK

• Continue boot

Note: Newer versions provide Reboot instead.