Burn to eMMc without external help

HI I’ve looked through the whole internet looking on how to burn to eMMc without any external help (monitor or ssh). I want to put an sd card in for it to burn to the emmc automatically. I thought of adding a script in the local or in the /etc/init.d that goes like this: sudo dd if= of … and then when it boots from the sd card it will clone its contents to the emmc.

Any help on how someone goes about doing this woud be great.

I’'m on the same page… I’m able to boot armbian buster and focal from sd but there are no way to do it from emmc… I tryied nand-sata-install and dd with no success.