Grub has a _password_ and _verify_ settings which are what you want. Or take a look at a ready-made configuration: https://github.com/CrowdStrike/travel-laptop

Grub has a _password_ and _verify_ settings which are what you want. Or take a look at a ready-made configuration: https://github.com/CrowdStrike/travel-laptop https://github.com/CrowdStrike/travel-laptop