mokutil:tldr:8251c

The command "mokutil --disable-validation" is used to disable the Secure Boot validation in a UEFI (Unified Extensible Firmware Interface) system.

Secure Boot is a security feature implemented in UEFI firmware that ensures only signed and trusted software can be booted on the system. It prevents the execution of malicious or unauthorized software during the boot process. However, sometimes it may be necessary to disable Secure Boot temporarily, such as when installing unsigned or custom-built software.

The "mokutil" command is a Linux command-line utility that manages Machine Owner Keys (MOKs), which are used for Secure Boot validation. MOKs are a type of trusted key that can be used to sign software, allowing it to bypass Secure Boot.

In the context of "mokutil --disable-validation", the command specifically disables one type of validation within the MOKs. By disabling validation, you essentially allow unsigned or improperly signed software to be executed during the boot process. This can be useful for troubleshooting or testing purposes, but it also poses a security risk as it may allow malicious software to run.

It's important to note that disabling Secure Boot validation should be done with caution, and only when absolutely necessary. After using the command, it is recommended to re-enable Secure Boot validation once the requirement for unsigned software has been fulfilled. The exact steps to re-enable Secure Boot may vary depending on the specific UEFI firmware in use.