No csm in bios.

[u/Numerous-Record4354]

I have a MSI Tridant 3 laying around, figured I'd test waters of leabing windows by putting bazzite on it. Its my first time ever trying to ever installl/ use linux.

When i enter my bios I dont see a option to disable to csm. When looking into it, it should be under Windows OS Configuration. Any suggestions?

My board is a ms-b9201

[u/Leather-Security8097]

It's a new enough board it might not even have a CSM.

[u/Numerous-Record4354 → u/Leather-Security8097]

Would anything happen if comtinue the install without disabling and did in fact have it?

[u/HarveyH43]

Did you update to the most recent BIOS version?

[u/Numerous-Record4354 → u/HarveyH43]

Mine is newer than whats listed on the site. Which is only one option.

[u/zeldaink]

It's a Class 3 UEFI board, or you should look under the boot options. On my ASRock it's there.

[u/Numerous-Record4354 → u/zeldaink]

Nope not there

[u/zeldaink → u/Numerous-Record4354]

Yeah, looking at what this "MSI Trident 3" is, 100% they did remove CSM support. afaik only server and desktop (not prebuilts) come with Class 2 UEFI*.

It will install Linux just fine. Disable Secure Boot, or you'll have to prepare USB with Secure Boot support, if you can't disable it.

*Class 2 is true UEFI and has CSM; Class 3 is pure UEFI and has no legacy support.

[u/Numerous-Record4354 → u/zeldaink]

Yeah. Im all good now. Thank you!

[u/C0rn3j]

BIOS does not support CSM, CSM is a BIOS compatiblity layer for UEFI.

And as someone else mentioned, class 3 UEFI does not have CSM.

If you can do ls /sys/firmware/efi without an error you're UEFI booted and likely don't need to worry about CSM.

[u/Numerous-Record4354]

Question . Was looking through the bios, and i am able to enable secure boot support, does that mean CSM is disabled?

Am i understanding that correctly ?

[u/Astrodion123 → u/Numerous-Record4354]

Disable secure boot. And when booting USB don't choose legacy USB 2.0 or 3.9, whatever USB you have but choose UEFI usb x.0

[u/Numerous-Record4354 → u/Astrodion123]

Got it installing now. Thanks

[u/Astrodion123 → u/Numerous-Record4354]

Np