Reading MFT

I don't think there is any support for reading the MFT (Master File Table) directly from C#, however if you understand the C++ snippets, you might be able to do something with P/Invoke. There is likely some API calls that could return the information your looking for.

I'd search around http://pinvoke.net
I know there was a good number of API calls that accepted volume/drive codes to return information about the drive as well as specific calls to get the information.