public static List <int> GetPhysicalDiskIndexList()
{
List <string> devicePathList = DeviceInterfaceUtils.GetDevicePathList(DeviceInterfaceUtils.DiskClassGuid);
List <int> result = new List <int>();
foreach (string devicePath in devicePathList)
{
SafeFileHandle hDevice = HandleUtils.GetFileHandle(devicePath, FileAccess.Read, ShareMode.ReadWrite);
STORAGE_DEVICE_NUMBER number = GetDeviceNumber(hDevice);
hDevice.Close();
result.Add((int)number.DeviceNumber);
}
// We'll now sort the list based on disk number
result.Sort();
return(result);
}
public static STORAGE_DEVICE_NUMBER GetDeviceNumber(SafeFileHandle hDevice)
{
uint dummy;
STORAGE_DEVICE_NUMBER storageDeviceNumber = new STORAGE_DEVICE_NUMBER();
IntPtr lpOutBuffer = Marshal.AllocHGlobal(Marshal.SizeOf(storageDeviceNumber));
bool success = DeviceIoControl(hDevice, IOCTL_STORAGE_GET_DEVICE_NUMBER, IntPtr.Zero, 0,
lpOutBuffer, (uint)Marshal.SizeOf(typeof(STORAGE_DEVICE_NUMBER)), out dummy, IntPtr.Zero);
storageDeviceNumber = (STORAGE_DEVICE_NUMBER)Marshal.PtrToStructure(lpOutBuffer, typeof(STORAGE_DEVICE_NUMBER));
Marshal.FreeHGlobal(lpOutBuffer);
if (!success)
{
throw new IOException("Unable to retrieve device number");
}
return(storageDeviceNumber);
}
