public class IDE
{
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
internal struct IDSECTOR
{
public ushort wGenConfig;
public ushort wNumCyls;
public ushort wReserved;
public ushort wNumHeads;
public ushort wBytesPerTrack;
public ushort wBytesPerSector;
public ushort wSectorsPerTrack;
[ MarshalAs( UnmanagedType.ByValArray, SizeConst=3)]
public ushort [] wVendorUnique;
[ MarshalAs( UnmanagedType.ByValTStr, SizeConst=20)]
public string sSerialNumber;
public ushort wBufferType;
public ushort wBufferSize;
public ushort wECCSize;
[ MarshalAs( UnmanagedType.ByValTStr, SizeConst=8)]
public string sFirmwareRev;
[ MarshalAs( UnmanagedType.ByValTStr, SizeConst=40)]
public string sModelNumber;
public ushort wMoreVendorUnique;
public ushort wDoubleWordIO;
public ushort wCapabilities;
public ushort wReserved1;
public ushort wPIOTiming;
public ushort wDMATiming;
public ushort wBS;
public ushort wNumCurrentCyls;
public ushort wNumCurrentHeads;
public ushort wNumCurrentSectorsPerTrack;
public uint ulCurrentSectorCapacity;
public ushort wMultSectorStuff;
public uint ulTotalAddressableSectors;
public ushort wSingleWordDMA;
public ushort wMultiWordDMA;
[ MarshalAs( UnmanagedType.ByValArray, SizeConst=128 )]
public byte [] bReserved;
}

[StructLayout(LayoutKind.Sequential)]
internal struct DRIVERSTATUS
{
public byte bDriverError;
public byte bIDEStatus;
[ MarshalAs( UnmanagedType.ByValArray, SizeConst=2 )]
public byte [] bReserved;
[ MarshalAs( UnmanagedType.ByValArray, SizeConst=2 )]
public uint [] dwReserved;
}

[StructLayout(LayoutKind.Sequential)]
internal struct SENDCMDOUTPARAMS
{
public uint cBufferSize;
public DRIVERSTATUS DriverStatus;
[ MarshalAs( UnmanagedType.ByValArray, SizeConst=513 )]
public byte [] bBuffer;
}

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
internal struct SRB_IO_CONTROL
{
public uint HeaderLength;
[ MarshalAs( UnmanagedType.ByValTStr, SizeConst=8 )]
public string Signature;
public uint Timeout;
public uint ControlCode;
public uint ReturnCode;
public uint Length;
}

[StructLayout(LayoutKind.Sequential)]
internal struct IDEREGS
{
public byte bFeaturesReg;
public byte bSectorCountReg;
public byte bSectorNumberReg;
public byte bCylLowReg;
public byte bCylHighReg;
public byte bDriveHeadReg;
public byte bCommandReg;
public byte bReserved;
}

[StructLayout(LayoutKind.Sequential)]
internal struct SENDCMDINPARAMS
{
public uint cBufferSize;
public IDEREGS irDriveRegs;
public byte bDriveNumber;
[ MarshalAs( UnmanagedType.ByValArray, SizeConst=3 )]
public byte [] bReserved;
[ MarshalAs( UnmanagedType.ByValArray, SizeConst=4 )]
public uint [] dwReserved;
public byte bBuffer;
}

[StructLayout(LayoutKind.Sequential)]
internal struct GETVERSIONOUTPARAMS
{
public byte bVersion;
public byte bRevision;
public byte bReserved;
public byte bIDEDeviceMap;
public uint fCapabilities;
[ MarshalAs( UnmanagedType.ByValArray, SizeConst=4 )]
public uint [] dwReserved; // For future use.
}

[DllImport("kernel32.dll")]
private static extern int CloseHandle(uint hObject);

[DllImport("kernel32.dll")]
private static extern int DeviceIoControl(uint hDevice,
uint dwIoControlCode,
ref SENDCMDINPARAMS lpInBuffer,
int nInBufferSize,
ref SENDCMDOUTPARAMS lpOutBuffer,
int nOutBufferSize,
ref uint lpbytesReturned,
int lpOverlapped);

[DllImport("kernel32.dll")]
private static