If you have a stupid UEFI implementation there's a chance it overrides either the nvram entry or/and the boot loader settings, in whcih case you'll have to readd/reinstall just the boot loader. Not sure what kind of fallout you have with regards to secure boot and whether Windows 11 actively mandates it, afaik it shouldn't but don't know it definitely. If it does mandate it and you need to setup secure boot as well this will be more of the "longer time frame" business to properly set up a secure boot capable kernel.
According to this official article it should be business as usual and secure boot simply recommended but not actually required.
In which case yeah, the biggest question will be what your mainboard is doing exactly.
]]>My boot loader is rEFInd, and I currently have secure boot disabled.
Thank you.
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