diff --git a/src/libdisk/mkfile b/src/libdisk/mkfile
new file mode 100644
index 0000000..af49af6
--- /dev/null
+++ b/src/libdisk/mkfile
@@ -0,0 +1,19 @@
+<$PLAN9/src/mkhdr
+
+OFILES=\
+	disk.$O\
+	proto.$O\
+	scsi.$O\
+
+HFILES=$PLAN9/include/disk.h
+LIB=libdisk.a
+
+UPDATE=\
+	mkfile\
+	$HFILES\
+	${OFILES:%.$O=%.c}\
+
+<$PLAN9/src/mksyslib
+
+$O.test: test.$O $LIB
+	$LD -o $target test.$O $LIB