diff --git a/group_vars/openbsd.yml b/group_vars/openbsd.yml
index a4aca09..a538de7 100644
--- a/group_vars/openbsd.yml
+++ b/group_vars/openbsd.yml
@@ -14,3 +14,6 @@ tls_bundle: "{{ tls_certs }}/cert.pem"
 dsk_size: 10
 mem_size: 256
 num_cpus: 1
+
+# extra args for virt-install
+virt_install_os_args: --cdrom https://www.foo.sh/ks/openbsd/openbsd.iso
diff --git a/playbooks/include/vm-create.yml b/playbooks/include/vm-create.yml
index e143a4e..cd3934b 100644
--- a/playbooks/include/vm-create.yml
+++ b/playbooks/include/vm-create.yml
@@ -13,6 +13,9 @@
     dsk_opts: bus=virtio,cache=none,device=disk,format=raw
     base: /srv/libvirt/hdd/{{ inventory_hostname }}
 
+    inject: >-
+      {% if not '--cdrom' in virt_install_os_args %}{{ true }}{% endif %}
+
     virt_install_disks: >-
       {% if datadisks is defined %}
       {%   for i in range(datadisks|count) %}
@@ -44,7 +47,9 @@
         state: directory
       register: tmpdir
       delegate_to: localhost
-      when: inventory_hostname not in result.list_vms
+      when:
+        - inventory_hostname not in result.list_vms
+        - inject is defined
 
     - name: create inject file
       copy:
@@ -57,7 +62,9 @@
           %end
         dest: "{{ tmpdir.path }}/include.ks"
       delegate_to: localhost
-      when: inventory_hostname not in result.list_vms
+      when:
+        - inventory_hostname not in result.list_vms
+        - inject is defined
 
     - name: run virt-install
       command: >
@@ -69,7 +76,9 @@
           --vcpus "sockets=1,cores={{ num_cpus }},threads=1,placement=auto" \
           --memory {{ mem_size }} --cpu host-passthrough \
           --disk {{ os_disk_image }},{{ dsk_opts }},size={{ dsk_size }} \
+          {% if inject -%}
           --initrd-inject {{ tmpdir.path }}/include.ks \
+          {% endif -%}
           {{ virt_install_disks }} \
           {{ virt_install_network }} \
           {{ virt_install_os_args }}