--- recovery-menu	2016-08-13 16:03:01.620839231 -0700
+++ recovery-menu	2016-08-13 16:05:14.565498468 -0700
@@ -16,6 +16,12 @@
 while true; do
   unset items
 
+  if grep "\sro[\s,]" /proc/self/mounts; then
+    READONLY=true
+  else
+    READONLY=false
+  fi
+
   if [ "$READONLY" = "true" ]; then
     menu_text=$(eval_gettext "Recovery Menu (filesystem state: read-only)")
   else