--- /etc/init.d/umountroot.~1~	2006-01-09 20:09:39.000000000 +0100
+++ /etc/init.d/umountroot	2006-02-21 14:41:21.000000000 +0100
@@ -21,7 +21,7 @@
 
 do_stop () {
     [ "$VERBOSE" != no ] && log_action_begin_msg "Mounting root filesystem read-only"
-    mount -n -o remount,ro /
+    mount -n -o remount,ro $(mount | grep ' on / ' | /usr/bin/cut -d\  -f1)
     [ "$VERBOSE" != no ] && log_action_end_msg $?
 }