diff --git a/clientside/tmcc/freebsd/slicefix b/clientside/tmcc/freebsd/slicefix
index 4f1ab96b9d7f9f7a7238d1de88608e1ee75c8ff8..006503fb4ee18b8bd684504d25307b0996b44e5d 100755
--- a/clientside/tmcc/freebsd/slicefix
+++ b/clientside/tmcc/freebsd/slicefix
@@ -628,6 +628,7 @@ dolinux() {
 	# perc
 	mfid[0-15])
 		dtype="sd"
+		dunit=`echo $disk | sed -e 's/mfid\([0-9][0-9]*\)/\1/'`
 		lrootdev="8${dunit}${part}"
 		;;
 	# Megaraid