https://libreboot.org/docs/linux/grub_hardening.html
Libreboot – Hardened GNU boot loader (GRUB payload)
The GNU boot loader GRUB provides many encryption and boot protection schemes to increase security, rivalling schemes like UEFI SecureBoot.
gnu bootlibreboothardenedloadergrub
https://www.turnkeylinux.org/forum/support/20110712/install-bare-metal-cant-boot-cd
Install to bare metal but can't boot from CD | TurnKey GNU/Linux
I have an older machine that refuses to allow me to boot from it's CD and I need to install your core appliance. I have burned a CD but can't figure out how to...
https://techrights.org/o/2014/05/07/control-over-pc/
Microsoft Still Imposes Broken 'Updates' and Breaks GNU/Linux Through UEFI Boot Restrictions
https://bbs.archlinux.org/viewtopic.php?id=304310
two boot managers / GNU/Linux Discussion / Arch Linux Forums
gnu linuxtwobootmanagersdiscussion
https://www.turnkeylinux.org/comment/13848
Login fails on first boot | TurnKey GNU/Linux
I just installed the TK OTRS appliance in a CT on PVE. I am able to remote into it and login as root. I can alo use the same root credentials and logon to...
first bootfailsturnkeygnulinux