diff --git a/mod_for_factory_scripts/400configAutotest b/mod_for_factory_scripts/400configAutotest
deleted file mode 100755
index 74261a5512..0000000000
--- a/mod_for_factory_scripts/400configAutotest
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/bin/bash
-
-# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-echo "Configure autotest setting."
-
-GLOBAL_CONFIG="${ROOT_FS_DIR}/usr/local/autotest/global_config.ini"
-
-if [ -f "${GLOBAL_CONFIG}" ]; then
-  echo -e "File ${GLOBAL_CONFIG} already exists."
-  exit 1
-fi
-
-cat >"${GLOBAL_CONFIG}" <<EOF
-[CLIENT]
-drop_caches: False
-drop_caches_between_iterations: False
-EOF
diff --git a/mod_for_factory_scripts/README.this_directory_is_obsolete b/mod_for_factory_scripts/README.this_directory_is_obsolete
new file mode 100644
index 0000000000..38b5285587
--- /dev/null
+++ b/mod_for_factory_scripts/README.this_directory_is_obsolete
@@ -0,0 +1,3 @@
+Please do not add new files to this directory.  Instead, use:
+
+src/third_party/chromiumos-overlay/chromeos-base/factorytest-init/factorytest-init-9999.ebuild