diff --git a/preseed-late.sh b/preseed-late.sh
new file mode 100755
index 0000000..5b2fe1c
--- /dev/null
+++ b/preseed-late.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+# This script gets called at the end of an install.
+
+set -x
+
+echo "workz" > /target/root/PRESEED
+
diff --git a/preseed.cfg b/preseed.cfg
index eb7e369..8fc49f8 100644
--- a/preseed.cfg
+++ b/preseed.cfg
@@ -47,4 +47,5 @@ d-i grub-installer/bootdev  string default
 d-i debian-installer/add-kernel-opts string console=tty0 console=ttyS1,115200n8 ipv6.disable=1
 d-i finish-install/keep-consoles boolean true
 d-i finish-install/reboot_in_progress note
+d-i preseed/run string https://code.forksand.com/forksand/eqx/raw/branch/master/preseed-late.sh