Index: libexec/rc/rc.d/zfskeys
===================================================================
--- libexec/rc/rc.d/zfskeys
+++ libexec/rc/rc.d/zfskeys
@@ -45,7 +45,15 @@
     local kl="$2"
     local k="${kl##file://}"
 
-    if [ "$k" ] && [ -f "$k" ] && [ -s "$k" ] && [ -r "$k" ]; then
+    if [ "$kl" == "prompt" ]
+    then
+        echo "Key prompt for $fs."
+        if zfs load-key -L "$kl" "$fs" < /dev/tty > /dev/tty 2>/dev/tty ; then
+	    echo "Key loaded for $fs."
+        else
+	    echo "Key failed to load for $fs."
+        fi
+    elif [ "$k" ] && [ -f "$k" ] && [ -s "$k" ] && [ -r "$k" ]; then
         if [ "$(zfs get -Ho value keystatus "$fs")" = 'available' ]; then
             echo "Key already loaded for $fs."
         elif keytest=$(zfs load-key -n -L "$kl" "$fs" 2>&1); then