[SOLVED] Can't find bootable devices after disabling csm and enabling secure mode on ASUS B550F wifi

[fsocun]

Hello, I would appreciate any help regarding this.

after I disabled the CSM and enabled secure boot on tuf b550 Wi-Fi motherboard, I can’t see any bootable devices therefore I can’t go to the windows, I have dual boot installed with Ubuntu

 

[drea.drechsler]

Hello, I would appreciate any help regarding this.

after I disabled the CSM and enabled secure boot on tuf b550 Wi-Fi motherboard, I can’t see any bootable devices therefore I can’t go to the windows, I have dual boot installed with Ubuntu

What I recall reading is secure boot doesn't work with Ubuntu in dual boot...but I've also read it can be set up to do so. I use neither Ubuntu nor a dual boot configuration so don't know personally but it appears to be a bit of a specialized application with it's own process for setting it up. You may have to set up the dual boot...and maybe even install both OS's again. That would be a bummer.

 

[Lutfij]

Welcome to the forums newcomer!

If you installed the OS under CSM mode enabled, you're advised to reinstall the OS when you disable it. You could however read through this thread, if you have the time.

 

[SkyNetRising]

after I disabled the CSM and enabled secure boot on tuf b550 Wi-Fi motherboard, I can’t see any bootable devices therefore I can’t go to the windows, I have dual boot installed with Ubuntu

If your bootable devices are not UEFI bootable, then you will not be able to boot from them after disabling CSM.

 

[SkyNetRising]

Windows can be converted to be UEFI bootable. Hint: mbr2gpt
https://docs.microsoft.com/en-us/windows/deployment/mbr-to-gpt

Not sure about Ubuntu though. Probably will be significantly more complicated.
Here some guidelines:
https://askubuntu.com/questions/845...-mbr-drive-to-a-gpt-and-make-ubuntu-boot-from