this post was submitted on 01 Oct 2024
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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For Secure Boot, the kernel is "signed" with a key. During boot up, Secure Boot checks to make sure that key is valid. Most kernels are signed with Microsoft's key that is preloaded on basically every system. However, not all kernels can be signed with Microsoft's key; if you install a proprietary driver (which you likely selected to during the setup), to continue using secure boot you need to sign the kernel using your own key.
That's what MOK management is for. You are adding your own key to your system to use for Secure Boot.
Personally, I just disable Secure Boot. While it does have some security benefits, it's not worth the headache IMO.
Thanks for the explanation! I disabled Secure Boot, though, so how did this still happen?
You can still do MOK management when Secure Boot is off.
Thank you for your response! So I can select
Continue boot, install Mint and then reenable Secure Boot after I'm done installing?If you continue without adding the keys, you may have issues if you rely on out of tree drivers like Nvidia. Personally, I would hit continue then leave secure boot off.