Hello,
What is the proper way to output GRUB2 menu to serial rs232 console when
UEFI boot is used? I've copy-pasted GRUB_SERIAL_COMMAND="serial --unit=0
--speed=115200" from Google because I didn't find anything else. It
doesn't work.
Now, reading grub sources, I see that the proper way should probably be
something like GRUB_SERIAL_COMMAND="serial efi0".
Could you please point me to proper documentation?
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