All Questions
Tagged with secure-boot uefi
87
questions
0
votes
0
answers
41
views
How to alternate automatically at boot between my laptop's two installed OSes?
I have Windows 10 and Ubuntu Linux 20.04 installed into separate encrypted partitions on my Dell Latitude 5411 laptop. When I shut down one OS, it's always to boot into the other one.
Linux is the ...
- 411
1
vote
0
answers
174
views
Why the TPM PCRs does not consider a UEFI settings change? If someone resets CMOS, it's undetected
In my laptop I've set up a bios pw when I power on the laptop, and once I enter it the laptop starts my linux distro and decrypts the disk without asking any other password. To do this I've set up TPM ...
- 254
-2
votes
1
answer
1k
views
Why does my computer say "Soft Temporary Disable" at boot after disabling Secure Boot?
I have a HP PC bought less than four years ago.
I had several annoying issues with Linux due to this "Secure Boot" junk, so I disabled it in the BIOS/UEFI settings. Then I was able to ...
- 105
1
vote
1
answer
833
views
Making a MOK-signed GRUB with extra modules
I have a Wake-on-LAN situation where I'd like GRUB to make a network request to decide "should I boot Windows?", perhaps by load_env (http,192.168.1.123)/grubenv (so I can write that file ...
- 253
0
votes
1
answer
553
views
Why can Debian 11 no longer load after Windows 10 changed motherboard state?
Note that this question is not a duplicate of the typical dual-boot questions, because I never have the Windows-HDD and Linux-SSD at once in the PC, so they cannot touch each other's (efi) partitions.
...
1
vote
1
answer
753
views
Boot stuck on Dell logo after changing GPU, Secure Boot enabled
I have recently bought and installed an AMD RX Radeon 6600, and now my computer gets stuck at the Dell logo and I cannot get to the BIOS or anything else. After investigating, I found that if I ...
2
votes
0
answers
331
views
How does PCIe card vendors sign option ROMs?
If secure boot is enabled UEFI system would permit to run only signed Option ROMs.
I presume PCIe card vendors want their devices to work even if Secure Boot is enabled. Therefore how does PCIe card ...
- 163
0
votes
0
answers
42
views
Bootloop behavior for Win10 installation or Win10 install media
I have a Win10 system I've been using without any issues for ~2.5 years. The mobo is ASUS ROG Crosshair VIII Hero Wifi. The CPU is Ryzen 3950x.
Last week I had a weird occurrence where the system ...
- 673
5
votes
2
answers
67k
views
How do I turn secure boot off in UEFI BIOS on an ASUS TUF Gaming board?
I've tried following various tutorials. The closest one to displaying similar screens as I have was this: https://www.technorms.com/45538/disable-enable-secure-boot-asus-motherboard-uefi-bios-utility
...
- 885
1
vote
0
answers
318
views
Is it possible to allow only a certain secure USB boot media to boot an UEFI system?
I want to restrict all USB boot media from my system, except for a certain USB boot drive that I declare secure via a certain key.
Is this possible using UEFI/Secure Boot/TPM? Maybe via TPM? TPM gets ...
- 4,978
1
vote
1
answer
5k
views
Unable to access BIOS after enabling secure boot (no screen output)
I disabled CSM and enabled secure boot on my Gigabyte Aorus b550 AC with a EVGA GTX 1080.
Every time I boot up my machine, it boots straight into Windows (dual-boot system with ReFind as bootloader) ...
- 1,984
0
votes
0
answers
501
views
Cause for EFI Signature Change on PopOS Linux
I have a system with popos 21.10 installed. I had added the vmlinuz.efi signature to the secure boot list. Today I tried to boot the system after a week idle and it gave me an error saying the ...
- 103
1
vote
1
answer
1k
views
Secure boot with unified kernel image on openSuSE?
I am trying to install OpenSuSE Tumbleweed on a system with encrypted root partition. At first i tried to set up GRUB, but it refused to recognize a LUKS-encrypted partition.
Currently I am trying to ...
- 8,275
5
votes
2
answers
6k
views
Secure boot - How to append custom certificate to db if BIOS has no such option?
I have HP 245G7 notebook. The BIOS is very basic and there does not seem to be any option from within to append my own custom certificate to db database of secure boot.
If there is an option in this ...
- 351
2
votes
3
answers
6k
views
turning on secure boot gives only a black screen
I have installed Windows 10 with secure boot off and now I want to install Windows 11. So I turned secure boot back on but, only a black screen shows after computer boots.
What I see - I can see POST ...
- 130