Secure boot issues | Linux Mint Community🍵 | Page 1

toxic escarp May 5, 2026, 9:33 AM

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I want to change distros, from mint to cachyos in a dual boot system but for some reason im unable to turn off secure boot from the bios, in turn im also unable to delete the mint partition that exists on my pc
Anyone have any idea what to do?

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By not turning off i mean the option is enabled and greyed out i cannot interact with it, asus device

vast basalt May 5, 2026, 9:40 AM

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By any chance, did you set a password for Secure Boot when you installed LM—the one the system asked for during installation ? 🤔

toxic escarp May 5, 2026, 9:42 AM

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vast basalt By any chance, did you set a password for Secure Boot when you installed LM—the ...

Is there any way to check if i dont remember? im pretty sure i didnt

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It was off when i installed linux, its only today that i noticed its on while trying to delete my linux partition (which i was unable to)

toxic escarp May 5, 2026, 9:48 AM

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vast basalt By any chance, did you set a password for Secure Boot when you installed LM—the ...

oh do you mean the administrator password on linux?

neat tusk May 5, 2026, 9:49 AM

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toxic escarp I want to change distros, from mint to cachyos in a dual boot system but for som...

what is your computer or motherboard ?

toxic escarp May 5, 2026, 9:49 AM

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asus vivobook

neat tusk May 5, 2026, 9:50 AM

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can you go in BIOS setup boot options section and take photo ?

toxic escarp May 5, 2026, 9:50 AM

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yeah 1sec

neat tusk May 5, 2026, 9:51 AM

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actually i depend yout BIOS setup version, take photo of Security section too if yoyu have it

toxic escarp May 5, 2026, 9:52 AM

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Boot options

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Security^

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Secure boot options

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neat tusk May 5, 2026, 9:55 AM

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go in key management

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you should find something like "erase keys"

toxic escarp May 5, 2026, 9:56 AM

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Theres a "reset to setup mode"

neat tusk May 5, 2026, 9:56 AM

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only that ?

toxic escarp May 5, 2026, 9:56 AM

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Yeah

neat tusk May 5, 2026, 9:56 AM

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lets do this

toxic escarp May 5, 2026, 9:57 AM

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neat tusk May 5, 2026, 9:58 AM

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back previous page

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what changed ?

toxic escarp May 5, 2026, 9:59 AM

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Wait was i supposed to reset to setup mode?

neat tusk May 5, 2026, 9:59 AM

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yes

toxic escarp May 5, 2026, 9:59 AM

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Only thing that changed on the previous page is the platform mode

neat tusk May 5, 2026, 10:01 AM

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you canno change Secure Boot control ?

toxic escarp May 5, 2026, 10:01 AM

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I can

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I could do that before as well tho

neat tusk May 5, 2026, 10:02 AM

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... what choices do you have ? enabled and ?

toxic escarp May 5, 2026, 10:02 AM

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Disabled

neat tusk May 5, 2026, 10:02 AM

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go for disabled, I think this is that since the begining

toxic escarp May 5, 2026, 10:02 AM

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Disabled gets rid of key management

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Okay

neat tusk May 5, 2026, 10:02 AM

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it does not disable secure boot ?

toxic escarp May 5, 2026, 10:03 AM

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Nope

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neat tusk May 5, 2026, 10:03 AM

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ok so no that's not this

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wait a min... do you have some bitlocker enabled in Windows ?

toxic escarp May 5, 2026, 10:04 AM

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Ive disabled it when i first installed mint

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I did check today and i cannot find bitlocker anywhere on windows like it just doesnt exist anymore

neat tusk May 5, 2026, 10:05 AM

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ok wait a bit

toxic escarp May 5, 2026, 10:05 AM

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Okay

neat tusk May 5, 2026, 10:06 AM

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i have similar laptop, i chekc on my bios

toxic escarp May 5, 2026, 10:06 AM

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Okay

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Not sure if this means much but it also says this under secure boot control

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neat tusk May 5, 2026, 10:07 AM

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platform reset...

toxic escarp May 5, 2026, 10:08 AM

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Meaning

neat tusk May 5, 2026, 10:09 AM

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no idea

toxic escarp May 5, 2026, 10:10 AM

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Could it mean a bios reset?

neat tusk May 5, 2026, 10:10 AM

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no no

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set an admin password

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you'll remove it after

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choose an easy password you can't misstype

toxic escarp May 5, 2026, 10:11 AM

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This thing right

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neat tusk May 5, 2026, 10:12 AM

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UEFI password settings yes

toxic escarp May 5, 2026, 10:12 AM

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neat tusk May 5, 2026, 10:12 AM

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admin

toxic escarp May 5, 2026, 10:12 AM

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Yeah i did set

neat tusk May 5, 2026, 10:13 AM

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ok, chek if you can change secure boot

toxic escarp May 5, 2026, 10:14 AM

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Nope

neat tusk May 5, 2026, 10:14 AM

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okn forgot that, remove the admin password

toxic escarp May 5, 2026, 10:15 AM

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Okay

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Password is gone

neat tusk May 5, 2026, 10:16 AM

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go back to secure boot

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enable secure boot control

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go in key management, and take photo

toxic escarp May 5, 2026, 10:17 AM

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neat tusk May 5, 2026, 10:17 AM

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ok, select restore factory keys

toxic escarp May 5, 2026, 10:18 AM

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Back to what it was

neat tusk May 5, 2026, 10:19 AM

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ok... secure boot still enabled I guess...

toxic escarp May 5, 2026, 10:19 AM

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Yep

neat tusk May 5, 2026, 10:19 AM

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Save & Exit BIOS, but go back to BIOS just afater reboot

toxic escarp May 5, 2026, 10:20 AM

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Okay

neat tusk May 5, 2026, 10:21 AM

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go back to key management

toxic escarp May 5, 2026, 10:21 AM

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Yeah

neat tusk May 5, 2026, 10:21 AM

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select Platform Key, and Delete it

toxic escarp May 5, 2026, 10:21 AM

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Okay

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Rebooting also changed "forbidden signatures"

neat tusk May 5, 2026, 10:23 AM

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ok, save & Exit and go back to BIOS

toxic escarp May 5, 2026, 10:23 AM

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Do i reboot?

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IT WORKED

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YOU WIZARD

neat tusk May 5, 2026, 10:24 AM

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great...

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not easy on that bios

toxic escarp May 5, 2026, 10:24 AM

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Oh

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What went wrong tho?

neat tusk May 5, 2026, 10:25 AM

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nothing, BIOS is simply tricky and don't offer obvious and easy way to disable Secure Boot

toxic escarp May 5, 2026, 10:26 AM

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Oh

neat tusk May 5, 2026, 10:26 AM

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so, you need to delete Plateform Key to disable it

toxic escarp May 5, 2026, 10:26 AM

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Would this also fix the issue i had with being unable to delete my linux partition?

neat tusk May 5, 2026, 10:26 AM

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toxic escarp Would this also fix the issue i had with being unable to delete my linux partiti...

depend, from where are you trying to delete it ?

toxic escarp May 5, 2026, 10:27 AM

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Windows

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Unless i need to do it from the livedrive?

neat tusk May 5, 2026, 10:28 AM

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Never use Windows to manipulate Linux partitions, NEVER

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yes, do that from Live USB, using Gparted

toxic escarp May 5, 2026, 10:28 AM

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Oh okay

toxic escarp May 5, 2026, 10:28 AM

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neat tusk Never use Windows to manipulate Linux partitions, NEVER

May or may not have added a partition a while back-

neat tusk May 5, 2026, 10:29 AM

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using Windows Disk Manager to edit paritions on drive with linux is a good way to wipe out your Linux pratitions

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Windows is not aware at all of what Linux partitions are, it take theme as "invalid"

toxic escarp May 5, 2026, 10:30 AM

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Oof okay ill keep that in mind

toxic escarp May 5, 2026, 11:34 AM

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@neat tusk okay this may be completely unrelated to the secure boot issue, im not able to boot from a live drive now

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Ive remade it multiple times too

neat tusk May 5, 2026, 11:35 AM

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toxic escarp <@306006018930900992> okay this may be completely unrelated to the secure boot i...

explain... error message ? what happen ?

toxic escarp May 5, 2026, 11:36 AM

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Just doesnt boot even when forced

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Boot order is set to usb first, it still boots to grub (where theres no usb option)

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Forcing it into booting from usb does nothing eithef

neat tusk May 5, 2026, 11:37 AM

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toxic escarp Boot order is set to usb first, it still boots to grub (where theres no usb opti...

hem, USB also have grub, so...

toxic escarp May 5, 2026, 11:38 AM

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But it dont boot from it

neat tusk May 5, 2026, 11:38 AM

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Which distro is on your USB, and flashed using what software ?

toxic escarp May 5, 2026, 11:39 AM

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Ive tried with both mint and cachy os since (i need gparted), used rufus

neat tusk May 5, 2026, 11:40 AM

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currently, which one is on your USB ?

toxic escarp May 5, 2026, 11:40 AM

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Right now cachyos

neat tusk May 5, 2026, 11:40 AM

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ok, in Rufus what option do you used to flash USB ?

toxic escarp May 5, 2026, 11:40 AM

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Gpt, uefi non csm

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Fat32

neat tusk May 5, 2026, 11:41 AM

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well, you have Mint installed on that computer ?

toxic escarp May 5, 2026, 11:41 AM

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Yeah

neat tusk May 5, 2026, 11:41 AM

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go to Mint, use the USB creator to flash your USB, once done, tell me

toxic escarp May 5, 2026, 11:41 AM

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Okay 1sec

toxic escarp May 5, 2026, 11:43 AM

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neat tusk go to Mint, use the USB creator to flash your USB, once done, tell me

With cachyos?

neat tusk May 5, 2026, 11:44 AM

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let's try with CachyOS yes

toxic escarp May 5, 2026, 12:06 PM

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neat tusk let's try with CachyOS yes

Okay, what next

neat tusk May 5, 2026, 12:07 PM

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You know how to go to Boot Menu ? (F8 key) ?

toxic escarp May 5, 2026, 12:08 PM

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F8 key does nothing on this

neat tusk May 5, 2026, 12:09 PM

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it should...

toxic escarp May 5, 2026, 12:09 PM

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Nope

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Does nothing

neat tusk May 5, 2026, 12:09 PM

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wait

toxic escarp May 5, 2026, 12:09 PM

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I have this tho

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Uhhhh i did something i think i booted the drive

neat tusk May 5, 2026, 12:15 PM

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you think ?

toxic escarp May 5, 2026, 12:15 PM

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Okay yeah im in

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It started loading a bunch of stuff and then blackscreened for a bit, but it booted

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Alright, i think ill be able to do the rest from here

#Secure boot issues