diff --git a/metal/roles/pxe-server/templates/preseed.cfg.j2 b/metal/roles/pxe-server/templates/preseed.cfg.j2
index 5d7c4cd..d4a1be3 100644
--- a/metal/roles/pxe-server/templates/preseed.cfg.j2
+++ b/metal/roles/pxe-server/templates/preseed.cfg.j2
@@ -54,6 +54,8 @@ d-i time/zone string {{ timezone | default('UTC') }}
 d-i clock-setup/ntp-server string {{ ntp_server | default('de.pool.ntp.org') }}
 
 # Autoformat disk
+d-i partman-lvm/device_remove_lvm boolean true
+d-i partman-md/device_remove_md boolean true
 d-i partman-auto/disk string {{ hostvars[item]['disk'] | default('/dev/sda') }}
 d-i partman-auto/method string regular
 d-i partman-auto/choose_recipe select atomic