https://blog.wongcw.com/2022/05/21/fedora-bios-boot-sig%e6%88%90%e7%ab%8b%e7%82%ba%e4%bd%bf%e7%94%a8%e5%82%b3%e7%b5%b1bios%e7%9a%84%e7%94%a8%e6%88%b6%e6%8f%90%e4%be%9b%e6%94%af%e6%8c%81/