Symbian OS, and its File Server API in particular, already supports multiple drives. MDS services provided by S60 Platform complement the services already available in the File Server API. Therefore MDS provided by S60 Platform and Symbian OS should be used in parallel. For more information about the File Server API, please refer to the Symbian OS Guide in the Symbian OS v9.4 Library for Developers (included in the S60 5th Edition SDK Help).