in the EFi-Shell I want to make beep via the board speaker. Can´t find any command or hint how to do so in the internet.
I´ve already tried as supposed in other discussions (not referring EFI-Shell):
echo '\a'
echo '\007'
I´m running the system on an Intel Atom Processor.
It depends on your hardware - whether there is a piezo speaker or not.
Look for the Beep utility in my UEFI-Utilities-2018 repository on Github for example C code and a compiled X64 binary (Beep.efi)