Hi,
when I search for CSM vs UEFI on the Internet, I almost only see discussions about it regarding Windows computer benefits. But are there benefits for Linux only computers (no dual boot) regarding using UEFI instead of CSM?
Basically a list with benefits for Linux only computer would be cool.
And if there are benefits, do I need to reinstall my Linux OS if I already installed it with CSM enabled?
well UEFI is a modern tech, so it will get better updates support.
AFAIK SecureBoot only works with UEFI and for me, UEFI is mandatory for a more secure OS.
CSM is used for compatibility purposes, for when you have legacy hardware that wont work with UEFI.
Do you have any specifics? Better how? My motherboard has both CSM and UEFI and gets firmware updates now and then.So what specifically would be better regarding updates if I change in my motherboard settings from CSM to UEFI?
Besides SecureBoot, what are the benefits of me switching in my motherboard settings from CSM to UEFI? Because I know about SecureBoot, but is the only benefit of me switching from CSM to UEFI (same motherboard) SecureBoot? You make it sound like there are like hundreds good points, why someone should immediately go into the motherboard settings and change from CSM to UEFI. Maybe you could list more?
No, that’s all I could think of, off the top of my head. And that (SecureBoot) seems all that matters.
I am curious what is your specific use case for CSM? I dont seem to have any of the devices I control/manage under CSM. I had an M.2 to SATA adapter for my NAS that only worked under CSM and that was it. Since then I used other means to connect (I now use an angle SATA adaptor because the NAS case I am using is too small even for my ITX mobo).
Secure Boot, VFIO/PCIe passthrough, firmware capsule updates, and operating system set boot choices as well as some other settings all require UEFI
also since the boards are UEFI native, you’re really just running a BIOS environment on top of them
if you already installed with it, just leave it and change it next time
I don’t think that I have a specific use case for CSM. It was just enabled by default on my motherboard. Now I’m trying to figure out if I should switch to UEFI if I don’t use SecureBoot.
Judging by the stuff I read on the Internet, the only privacy and security enhancing benefit of UEFI is SecureBoot…and since I don’t use it, why switch? Although I would definitely switch, if I see good arguments for more privacy or security. But unfortunately it’s only SecureBoot or some vague fancy words like “modern”, that is mentioned.
Ok, but except of SecureBoot, how exactly are any of those points enhancing my privacy or security. It’s sounds like more options to do stuff that is not privacy or security related for the “normal” person, that only uses a web browser and maybe does some gaming.
And what do you mean with “change it next time” ?
Are you perhaps on an Nvidia GPU and that is why you need SecureBoot to be off?
I hear that with the recent development of drivers, the noveau driver should be getting improved performance that is hopefully at par with mesa sp in the future yoi get to enjoy the security benefits of SecureBoot while gaming in an Nvidia GPU.
IIRC these are used for the fwupdmgr and those are the prescribed method of properly updating mobo (or any firmware) within linux (because historically, you had to reinstall windows to run firmware updates).
This is the technology that you may want if you want a gaming grade VM performance that is on par with a bare metal install of Windows.
Also VFIO isolates the parts of the CPU so that a malicious USB device is properly isolated.
Does this “fwupdmgr” only work with UEFI and not with CSM?
And do I need to reinstall my Linux OS, which I installed with CSM enabled and not UEFI, if I want to get all the benefits of UEFI?
“SkewedZeppelin” said, that “change it next time”…but what does he mean with “next time”? Next time I boot my computer or next time I maybe completely reinstalling my Linux OS and therefore I would need to reinstall my Linux OS?
And also: I heard that switching to UEFI can even break some motherboards…so…is there a chance that it will brick my motherboard?