This following instructions install Arch Linux on a GPD Pocket 2. This installation uses systemd for boot. It sets up a 30GB root partition and an encrypted user partition that is decrypted and mounted on login. Let's get started.
Download and write the Arch Linux installation ISO to a flash drive. Insert flash drive, press power, hold F12, and select flash drive to boot.
Rotate console:
echo 1 > /sys/class/graphics/fbconv/rotate_all
Connect to Wi-Fi: