this post was submitted on 08 May 2024
13 points (88.2% liked)
linux4noobs
1355 readers
1 users here now
linux4noobs
Noob Friendly, Expert Enabling
Whether you're a seasoned pro or the noobiest of noobs, you've found the right place for Linux support and information. With a dedication to supporting free and open source software, this community aims to ensure Linux fits your needs and works for you. From troubleshooting to tutorials, practical tips, news and more, all aspects of Linux are warmly welcomed. Join a community of like-minded enthusiasts and professionals driving Linux's ongoing evolution.
Seeking Support?
- Mention your Linux distro and relevant system details.
- Describe what you've tried so far.
- Share your solution even if you found it yourself.
- Do not delete your post. This allows other people to see possible solutions if they have a similar problem.
- Properly format any scripts, code, logs, or error messages.
- Be mindful to omit any sensitive information such as usernames, passwords, IP addresses, etc.
Community Rules
- Keep discussions respectful and amiable. This community is a space where individuals may freely inquire, exchange thoughts, express viewpoints, and extend help without encountering belittlement. We were all a noob at one point. Differing opinions and ideas is a normal part of discourse, but it must remain civil. Offenders will be warned and/or removed.
- Posts must be Linux oriented
- Spam or affiliate links will not be tolerated.
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
You're looking at bootloaders, not kernels; you need to enroll the kernel with one of those bootloaders. Usually running
sudo update-grub
while in the OS will automatically detect and add any available kernels to the default version of GRUB.If you can't boot into the OS, you can select the kernel manually from the GRUB command line: https://www.unix-ninja.com/p/Manually_booting_the_Linux_kernel_from_GRUB
I have the kernel in the bootloader, problem is I need to enroll it with MOK manager to actually boot it in secure boot. But it starts in /boot/efi with no option to go back to /boot so I don't really understand how exactly I'm supposed to do it.
I've honestly never wrestled with Secure Boot in this way; I usually disable it if it won't let me boot my preferred kernel. From my brief online searches, enrolling your own keys is possible, but that depends on the kernel modules being signed in the first place, and carries risk of bricking devices if not done correctly. So you might just want to disable Secure Boot, or otherwise stick to kernels provided by your distribution.
https://www.dannyvanheumen.nl/post/secure-boot-linux-shim-mokmanager/ seems to be a good introduction to the concept. Your distribution should have specific documentation on how to make custom kernels and secure boot work if you need more details.
If you have already made a certificate and imported it with mokutil maybe you just need to select the MokManager.efi from your screenshot and start that to enroll the key.