To test that the MDS environment is working do the following:
Enable one of the multiple drive configurations (either internal mass storage with removable memory card or two removable memory cards).
See "How to simulate different drive configurations with the emulator " for more detailed instructions on how to simulate different drive configurations with the SDK emulator.
Launch the SDK emulator.
In the emulator, open the File Manager application.
The drives of the enabled multiple drive configuration should be visible in the main view of the File Manager. An example view is shown in Figure 1 in "Overview of Multiple Drive Support Technology Plug-in for S60".