> missing file is simply ignored What do you mean by "missing file"?
> grub cannot ignore missing /boot /boot is fine and I don't need it to be ignored of course. I just wanted to know, why would it prompt for a second password, if the input doesn't matter for / (root)? Like I said, if I just press enter it continues to the menu directly, I haven't entered anything in that prompt. In grub.cfg I have a couple of cryptomount commands and all of them use the proper uuid for /boot and / (root). I don't see any invalid parameters. My PC boots fine, I'm only asking about the purpose of this second prompt and whether it's a mistake.
