| Name | Type | Description | Required | 
|---|
| Id | String | The identifier of the Directory element to reference. | Yes | 
| DiskId | DiskIdType |                          Sets the default disk identifier for the files contained in this directory.                         This attribute's value may be overridden by a child Component, Directory,                         Merge or File element. See the File or Merge elements' DiskId attribute for                         more information.                      |   | 
| FileSource | String | Used to set the file system source for this DirectoryRef's child elements. For more information, see Specifying source files. |   | 
| src | String | This attribute has been deprecated; please use the FileSource attribute instead. |   | 
| Any Attribute (namespace='##other' processContents='lax')                      Extensibility point in the WiX XML Schema.  Schema extensions can register additional                     attributes at this point in the schema.                  |