It is typically in either the Boot menu or the Security menu. Within these menus, you want to find something about "Secure Boot", "Secure Boot Processing" or something similar to that. I actually like working with the implementation of UEFI boot in general, I find it to be more flexible and considerably more robust than the old MBR boot process. Note carefully, I am saying I disable Secure Boot only - not disable UEFI boot entirely, or return to Legacy (MBR) boot. Therefore my personal choice is to simply disable UEFI Secure Boot. They can do it either by getting their own boot images signed by Microsoft, or by producing a complete alternate signing authority, and getting the UEFI firmware to accept that authority and its signed images.Īlthough this might provide an adequate solution for the few distributions which are willing and have the resources to do it, it doesn't help the vast majority of distributions who don't have the time, resources or interest to get it done. Off the top of my head, I think openSUSE and Ubuntu do this, and I suppose there are some others. On the other hand, some Linux distributions have tried to adapt to UEFI firmware with Secure Boot by including a signed image in their installation. All I will say here is that this decision had the effect of making installing Linux on UEFI firmware systems much more difficult. I will leave the debate about the wisdom of that decision to others. What this means is that if you have UEFI Secure Boot enabled, you can only boot a certified signed image - and at least in the original UEFI specification, the only signing authority was Microsoft. The idea is to certify the boot image(s) on your computer, so that evil-doers can not corrupt or replace them, and thereby penetrate your system. ![]() Secure Boot is supposed to be one of the major reasons for the existence of UEFI firmware - but in my opinion it is a ridiculously complex solution for a problem that the vast majority of PC users would never be faced with. The first level of UEFI configuration is the basic choice of whether you want UEFI Secure Boot enabled or not. So if you have come here looking for simple answers and cookbook procedures, you're going to be disappointed. I will show that it's possible to install, configure, and use this Linux distribution with absolutely no command-line access.Įven worse, in some cases in my own direct experience, different systems from the same OEM have completely different UEFI configuration procedures. It is extremely useful for interrogating and manipulating the components of a UEFI BIOS image.Installing Linux on your PC is super easy - here's how to do it UEFITool is free software released under the BSD License. There is also a great search feature that lets you search your image for a hex pattern, GUID, or text. Hopefully this will give you an idea of how the tool can help you. Below are screenshots illustrating the options available for each type of firmware component. What you can do with UEFITool depends on the type of the image component you select. The “Information” panel on the right side will show details of what is selected in the left panel: You can expand and collapse the various components of the image and dig deeper. The tool opens displaying a graphical layout of the image on the left side: Will dump a system’s SPI part(s) to a binary dump file. This could be an image you create as a BIOS developer, or you can dump an image from a system using a ROM programmer or Intel’s Flash Programming Tool (FPT.EXE). ![]() I tested with version 0.21.5, available from the releases tab on GitHub.įor UEFITool to begin to do its work, you must provide it a UEFI image. It supports parsing of full BIOS images starting with the flash descriptor or any binary files containing UEFI volumes. ![]() UEFITool is a cross-platform C++/Qt program for parsing, extracting and modifying UEFI firmware images. Here’s a handy tool for interrogating firmware volumes: UEFITool! It is written by Nikolaj Schlej, and is great for examing the Regions/Volumes/Sections/Files that make up a UEFI image.
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