diff --git a/js/ui/cordova/plugins/cordova-plugin-file/www/fileSystems-roots.js b/js/ui/cordova/plugins/cordova-plugin-file/www/fileSystems-roots.js
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+++ b/js/ui/cordova/plugins/cordova-plugin-file/www/fileSystems-roots.js
@@ -0,0 +1,44 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+*/
+
+// Map of fsName -> FileSystem.
+var fsMap = null;
+var FileSystem = require('./FileSystem');
+var exec = require('cordova/exec');
+
+// Overridden by Android, BlackBerry 10 and iOS to populate fsMap.
+require('./fileSystems').getFs = function(name, callback) {
+    if (fsMap) {
+        callback(fsMap[name]);
+    } else {
+        exec(success, null, "File", "requestAllFileSystems", []);
+        function success(response) {
+            fsMap = {};
+            for (var i = 0; i < response.length; ++i) {
+                var fsRoot = response[i];
+                var fs = new FileSystem(fsRoot.filesystemName, fsRoot);
+                fsMap[fs.name] = fs;
+            }
+            callback(fsMap[name]);
+        }
+    }
+};
+