diff --git a/roles/global_defaults/defaults/main.yml b/roles/global_defaults/defaults/main.yml
index 8b942b9..3fe66da 100644
--- a/roles/global_defaults/defaults/main.yml
+++ b/roles/global_defaults/defaults/main.yml
@@ -37,6 +37,7 @@ hypervisor_defaults:
   certs: false
   ssh: false
 
+physical_default_os: "archlinux"
 custom_iso: false
 thirdparty_tasks: "dropins/preparation.yml"