I am new to Linux and heard about Fedora Silverblue. So I installed it on an old laptop in order to try it but decided it is not really for me. I tried to install another Linux distro using an ISO on a USB stick, but every time I choose to boot the system from it, I get this “Security Boot Fail” message and this is as far as things go. I have noticed that since installing silverblue my uefi is not set to secure and there is no way of taking that secure mode off. Does silverblue turn on secure boot when it is installed? If so how can I get silverblue to remove the secure boot? Can anyone give me any advice as to what to do? Thank you
So you can get into your BIOS?
And secure boot is turned off?
And when you boot from a USB you get ’ secure boot fail’?
This is the problem. The BIOS is the first place I went to. I tried to turn off the secure boot, but it will not allow me to do so. I even tried to reset the BIOS setting to factory, but it hasn’t changed a thing. Prior to installing silverblue I had no problems. Now I can’t do a thing. One thing that is off is that when I hit F12 for boot option, I have 3 boot option 2 Fedora and the ISO.
I don’t use Silverblue so I can’t comment on that version of Fedora.
What I can say is that Fedora or any Linux distro cannot alter your BIOS.
Can you post some photos of your boot options and BIOS options?
Its hard to understand why booting into a USB is not possible.
Fedora Silverblue does not have the ability to change the BIOS settings on the computer. The following may be relevant:
i have followed the instructions on the link you sent me and although the 2nd fedora has disappeared, I still cannot boot from a USB ISO for another distro. Prior to installing Silverblue I had no problems booting other distro. Now, every time I try I get this “Security Boot Fail” message. Sorry but so far I am not impressed with Silverblue,
Thanks for those photos above.
Can you select the USB option as boot priority one, and take a photo of the error message?
I can’t understand how Silverblue affected your BIOS. It is technically impossible.
Can you format your hard drive in another computer?
What distros did you use on this machine before Silverblue?
Which distro are you trying to boot now?
What model is your laptop?
Surely I must be missing something.
No 1 you can do.. Turn off computer, plug in USB drive with new OS. Turn on and go straight into bios, move USB up to the top line (in your picture from position 3 to position 1. Save and restart. That will get you onto your USB drive on boot-up.
But, there also should be a setting in the BIOS that allows you to boot from USB if a USB is detected. That is the one to turn on for future ability to boot from a live USB.
It’s ok. I did further research online and found a way to override the secure boot. However, I still can’t understand why secure boot only came on after installing silverblue. Anyway, the secure boot has been removed and I have now loaded another distro. Thank you for the fix about the double fedora fix in the BIOS.
Just a guess: As others have said, Fedora itself can’t update the UEFI settings. But Fedora can trigger UEFI & Secure Boot Forbidden Signature Database (DBX) updates (on some devices).
If such an update was installed on your system then it’s possible that previously bootable images are no longer considered secure. Microsoft revoked keys which affects older Linux images.
Possible but I Finally managed to go in the bios and remove the secure boot. Acer has a weird way of accessing this function but it eventually worked. Don’t know if it was what you suggest that happened but it is all good now.
Thanks for the help.
Can you tell us how you did it so we can let other users with the same problem know?
Sorry for taking so long. After being told that Fedora would not initiate a secure boot status, but knowing that I never did enable it, I went to AI with my problem. The AI’s answer based on my laptop model (Acer Aspire 515) told me to get in the bios and to set an administrator password. Once I did, I could get to the secure mode and disable it. Thanks for all the help that steered me in the right direction.