public int GetDiskFreeSpace(ref ulong freeBytesAvailable, ref ulong totalBytes, ref ulong totalFreeBytes, Dokan.DokanFileInfo info) { freeBytesAvailable = 512 * 1024 * 1024; totalBytes = 1024 * 1024 * 1024; totalFreeBytes = 512 * 1024 * 1024; return 0; }