Steam Deck - Missing SteamOS boot option & Make SteamOS default boot option
Go to Konsole and type " `sudo efibootmgr -c -L "SteamOS" -l "\EFI\steamos\steamcl.efi" -d /dev/nvme0n1p1 -b0001` (assuming 0001 isn't in use, check `efibootmgr` first)
Code to force SteamOS as Default boot option when dual booting:
https://github.com/scawp/Steam-Deck.F...