--- a/udev	2017-09-02 23:13:45.078773236 +0000
+++ b/udev	2017-09-02 22:40:08.502773236 +0000
@@ -1,6 +1,6 @@
 #!/bin/sh -e

-PREREQS=""
+PREREQS="union-mount"

 prereqs() { echo "$PREREQS"; }