diff --git a/UPDATING b/UPDATING
index 9b9a095deffc..bff271572761 100644
--- a/UPDATING
+++ b/UPDATING
@@ -23,6 +23,14 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 6.x IS SLOW:
 	developers choose to disable these features on build machines
 	to maximize performance.
 
+20041110:
+	We have had a hack which would mount the root filesystem
+	R/W if the device were named 'md*'.  As part of the vnode
+	work I'm doing I have had to remove this hack.  People
+	building systems which use preloaded MD root filesystems
+	may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
+	their /etc/rc scripts.
+
 20041102:
 	The size of struct tcpcb has changed again due to the removal
 	of RFC1644 T/TCP.  You have to recompile userland programs that