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by csdvrx 1515 days ago
> The parameters are encoded in UEFI NVRAM.

You can embed the parameters in the EFISTUB, this is explained in the arch wiki.

I use that to test different parameters with the same kernel packaged in different EFI payload, which I can select from the F12 boot menu if I don't want to use the commands to specify "use this payload only for the next boot"