Install Arch packages on your Steam Deck This applies to Desktop Mode. ??If you have not already, use passwd to create a password for the deck user. ??Disable read-only mode:? sudo btrfs property set -ts / ro false ??Initialize the pacman keyring:? sudo pacman-key --init ??Populate the pacman keyring with the default Arch Linux keys:? sudo pacman-key --populate archlinux ??Try installing a package: sudo pacman -S vi Note that any packages you install will likely be overwritten by the next Steam Deck update.?