(U)EFI: stands for (Unified) Extensible Firmware Interface.This included a boot menu and a very few more options, and many specialised configurations for some hardware devices had to be done by plugging, unplugging or changing physical jumpers in the motherboard. BIOS: stands for Basic Input and Ouput System, and it was the way that older (early 2000’s and before) computers had to connect the Operating Systems to the hardware.Root password: it’s the password of the root user, which is the most powerful authority in a Unix or Unix-like system, as GNU/Linux for instance.Many times, when it allows the Kernel to understand a piece of hardware, it can be called “a driver” like in Windows lingo, but there are modules for many other things.

Modules: specialised code that the Kernel will load to tailor its capabilities to very specific hardware or configurations.

It provides the applications with access to the hardware.

Kernel: it’s the hert of the operating system.

I assume that you are familiar with the following concepts, which I try to summarise. What I assume you already know (a.k.a., what you’re supposed to search in the interwebs if not!)

What is Secure Boot, and what’s it based on.

Post-Install situations affected by Secure Boot.

A process to install a Linux system with Secure Boot enabled.

What I assume you know, or a list of things for you to search about.

Or at least, to provide a lead that can be followed to read more and understand what’s happening. I do not want to reinvent the wheel or take credit for the existing state of the art, but to provide some insight that I hope it will be easy to understand to the Linux novel users. In this post I will provide some links, references, and “glue text to make sense” in order to provide clarity about Secure Boot: what it is, what it provides, and what it takes from us –mostly in terms of user experience, or friction. This post is motivated by the confusion and the still prevalent recommendation of disabling Secure Boot when installing GNU/Linux, no matter what distribution we are talking about.Ĭontrary to the mainstream trend of such a disablement and proceeding with an outdated bootstrap, security-wise, many distributions do support Secure Boot since a while ago. This is an attempt of make sense about the Secure Boot, and has been published also in my blog.

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