Install Arch Linux via SSH - ArchWiki
wiki.archlinux.org › title › Install_Arch_Linux_via_SSHFrom your existing machine (with keyboard and display) SSH into the live Arch environment on the headless server and complete the installation as described in the Installation guide. Note: To belabor the obvious, all the Wi-Fi and SSH configuration that was carried out in the boot image needs to be done again in the actual Arch Linux installation to allow WiFi SSH access to the headless machine after installation.