As stated in the title, I'm trying to determine if a drive DVD drive or a CD drive. Again, I am not asking about the media, I'm asking about the actual drive itself... the object pointed to by a DriveInfo class.
I'm thinking the DriveInfo class isn't enough and I'll instead have to get the Win32_DiskDrive instance from WMI and dig around in there. The problem is all the samples I've found so far talk about the detected media, but a DVD drive can use CD media so that isn't sufficient. Plus, the code should work regardless if media is present or not.
You can get it from WMI. Win32_CDROMDrive class.
ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT MediaType FROM Win32_CDROMDrive");
ManagementObjectCollection collection = searcher.Get();
foreach (ManagementBaseObject obj in collection)
{
MessageBox.Show(obj["MediaType"].ToString());
}
It will be problem, if you need then to know about BDRom etc. I recommend to use NeroCmd tools instead of WMI.
Also you can try look here. It's about burning, but there you can find Supported Media of drive. If it's support Blu-Ray media, then it's obviously not CD-ROM :)
I was try to get only important parts. Here we are using IMAPI2 API to get device features (CD/DVD/BD/HDDVD-READ). I know, that there are COMBO drives that supports BD and HDDVD but I don't show it in code.
//
// Determine the current recording devices
//
MsftDiscMaster2 discMaster = null;
try
{
discMaster = new MsftDiscMaster2();
if (!discMaster.IsSupportedEnvironment)
return;
// Get drives
foreach (string uniqueRecorderId in discMaster)
{
IDiscRecorder2 discRecorder2 = new MsftDiscRecorder2();
discRecorder2.InitializeDiscRecorder(uniqueRecorderId);
// Show device mount drive and determine type
Console.WriteLine("Path: {0} Type: {1}", discRecorder2.VolumePathNames[0], CheckType(discRecorder2));
}
}
catch (COMException ex)
{
Console.WriteLine("Error:{0} - Please install IMAPI2", ex.ErrorCode);
}
finally
{
if (discMaster != null)
Marshal.ReleaseComObject(discMaster);
}
Magic ^_^
// Determine type
static string CheckType(IDiscRecorder2 disc)
{
var features = disc.SupportedFeaturePages.Select(a => (IMAPI_FEATURE_PAGE_TYPE)a).ToArray();
if (features.Contains(IMAPI_FEATURE_PAGE_TYPE.IMAPI_FEATURE_PAGE_TYPE_HD_DVD_READ))
return "HD-DVD-ROM";
if (features.Contains(IMAPI_FEATURE_PAGE_TYPE.IMAPI_FEATURE_PAGE_TYPE_BD_READ))
return "BD-ROM";
if (features.Contains(IMAPI_FEATURE_PAGE_TYPE.IMAPI_FEATURE_PAGE_TYPE_DVD_READ))
return "DVD-ROM";
if (features.Contains(IMAPI_FEATURE_PAGE_TYPE.IMAPI_FEATURE_PAGE_TYPE_CD_READ))
return "CD-ROM";
return "Unknown";
}
Interop...
/// <summary>
/// Microsoft IMAPIv2 Disc Master
/// </summary>
[ComImport]
[Guid("27354130-7F64-5B0F-8F00-5D77AFBE261E")]
[CoClass(typeof(MsftDiscMaster2Class))]
public interface MsftDiscMaster2 : IDiscMaster2 //, DiscMaster2_Event
{
}
[ComImport, ComSourceInterfaces("DDiscMaster2Events\0")]
[TypeLibType(TypeLibTypeFlags.FCanCreate)]
[Guid("2735412E-7F64-5B0F-8F00-5D77AFBE261E")]
[ClassInterface(ClassInterfaceType.None)]
public class MsftDiscMaster2Class
{
}
[ComImport]
[CoClass(typeof(MsftDiscRecorder2Class))]
[Guid("27354133-7F64-5B0F-8F00-5D77AFBE261E")]
public interface MsftDiscRecorder2 : IDiscRecorder2
{
}
[ComImport]
[Guid("2735412D-7F64-5B0F-8F00-5D77AFBE261E")]
[TypeLibType(TypeLibTypeFlags.FCanCreate)]
[ClassInterface(ClassInterfaceType.None)]
public class MsftDiscRecorder2Class
{
}
/// <summary>
/// IDiscMaster2 is used to get an enumerator for the set of CD/DVD (optical) devices on the system
/// </summary>
[ComImport]
[Guid("27354130-7F64-5B0F-8F00-5D77AFBE261E")]
[TypeLibType(TypeLibTypeFlags.FDual | TypeLibTypeFlags.FDispatchable | TypeLibTypeFlags.FNonExtensible)]
public interface IDiscMaster2
{
// Enumerates the list of CD/DVD devices on the system (VT_BSTR)
[DispId(-4), TypeLibFunc((short)0x41)]
IEnumerator GetEnumerator();
// Gets a single recorder's ID (ZERO BASED INDEX)
[DispId(0)]
string this[int index] { get; }
// The current number of recorders in the system.
[DispId(1)]
int Count { get; }
// Whether IMAPI is running in an environment with optical devices and permission to access them.
[DispId(2)]
bool IsSupportedEnvironment { get; }
}
/// <summary>
/// Represents a single CD/DVD type device, and enables many common operations via a simplified API.
/// </summary>
[ComImport]
[TypeLibType(TypeLibTypeFlags.FDual | TypeLibTypeFlags.FDispatchable | TypeLibTypeFlags.FNonExtensible)]
[Guid("27354133-7F64-5B0F-8F00-5D77AFBE261E")]
public interface IDiscRecorder2
{
// Ejects the media (if any) and opens the tray
[DispId(0x100)]
void EjectMedia();
// Close the media tray and load any media in the tray.
[DispId(0x101)]
void CloseTray();
// Acquires exclusive access to device. May be called multiple times.
[DispId(0x102)]
void AcquireExclusiveAccess(bool force, string clientName);
// Releases exclusive access to device. Call once per AcquireExclusiveAccess().
[DispId(0x103)]
void ReleaseExclusiveAccess();
// Disables Media Change Notification (MCN).
[DispId(260)]
void DisableMcn();
// Re-enables Media Change Notification after a call to DisableMcn()
[DispId(0x105)]
void EnableMcn();
// Initialize the recorder, opening a handle to the specified recorder.
[DispId(0x106)]
void InitializeDiscRecorder(string recorderUniqueId);
// The unique ID used to initialize the recorder.
[DispId(0)]
string ActiveDiscRecorder { get; }
// The vendor ID in the device's INQUIRY data.
[DispId(0x201)]
string VendorId { get; }
// The Product ID in the device's INQUIRY data.
[DispId(0x202)]
string ProductId { get; }
// The Product Revision in the device's INQUIRY data.
[DispId(0x203)]
string ProductRevision { get; }
// Get the unique volume name (this is not a drive letter).
[DispId(0x204)]
string VolumeName { get; }
// Drive letters and NTFS mount points to access the recorder.
[DispId(0x205)]
object[] VolumePathNames {[DispId(0x205)] get; }
// One of the volume names associated with the recorder.
[DispId(0x206)]
bool DeviceCanLoadMedia {[DispId(0x206)] get; }
// Gets the legacy 'device number' associated with the recorder. This number is not guaranteed to be static.
[DispId(0x207)]
int LegacyDeviceNumber {[DispId(0x207)] get; }
// Gets a list of all feature pages supported by the device
[DispId(520)]
object[] SupportedFeaturePages {[DispId(520)] get; }
// Gets a list of all feature pages with 'current' bit set to true
[DispId(0x209)]
object[] CurrentFeaturePages {[DispId(0x209)] get; }
// Gets a list of all profiles supported by the device
[DispId(0x20a)]
object[] SupportedProfiles {[DispId(0x20a)] get; }
// Gets a list of all profiles with 'currentP' bit set to true
[DispId(0x20b)]
object[] CurrentProfiles {[DispId(0x20b)] get; }
// Gets a list of all MODE PAGES supported by the device
[DispId(0x20c)]
object[] SupportedModePages {[DispId(0x20c)] get; }
// Queries the device to determine who, if anyone, has acquired exclusive access
[DispId(0x20d)]
string ExclusiveAccessOwner {[DispId(0x20d)] get; }
}
public enum IMAPI_FEATURE_PAGE_TYPE
{
IMAPI_FEATURE_PAGE_TYPE_PROFILE_LIST = 0,
IMAPI_FEATURE_PAGE_TYPE_CORE = 1,
IMAPI_FEATURE_PAGE_TYPE_MORPHING = 2,
IMAPI_FEATURE_PAGE_TYPE_REMOVABLE_MEDIUM = 3,
IMAPI_FEATURE_PAGE_TYPE_WRITE_PROTECT = 4,
IMAPI_FEATURE_PAGE_TYPE_RANDOMLY_READABLE = 0x10,
IMAPI_FEATURE_PAGE_TYPE_CD_MULTIREAD = 0x1d,
IMAPI_FEATURE_PAGE_TYPE_CD_READ = 0x1e,
IMAPI_FEATURE_PAGE_TYPE_DVD_READ = 0x1f,
IMAPI_FEATURE_PAGE_TYPE_RANDOMLY_WRITABLE = 0x20,
IMAPI_FEATURE_PAGE_TYPE_INCREMENTAL_STREAMING_WRITABLE = 0x21,
IMAPI_FEATURE_PAGE_TYPE_SECTOR_ERASABLE = 0x22,
IMAPI_FEATURE_PAGE_TYPE_FORMATTABLE = 0x23,
IMAPI_FEATURE_PAGE_TYPE_HARDWARE_DEFECT_MANAGEMENT = 0x24,
IMAPI_FEATURE_PAGE_TYPE_WRITE_ONCE = 0x25,
IMAPI_FEATURE_PAGE_TYPE_RESTRICTED_OVERWRITE = 0x26,
IMAPI_FEATURE_PAGE_TYPE_CDRW_CAV_WRITE = 0x27,
IMAPI_FEATURE_PAGE_TYPE_MRW = 0x28,
IMAPI_FEATURE_PAGE_TYPE_ENHANCED_DEFECT_REPORTING = 0x29,
IMAPI_FEATURE_PAGE_TYPE_DVD_PLUS_RW = 0x2a,
IMAPI_FEATURE_PAGE_TYPE_DVD_PLUS_R = 0x2b,
IMAPI_FEATURE_PAGE_TYPE_RIGID_RESTRICTED_OVERWRITE = 0x2c,
IMAPI_FEATURE_PAGE_TYPE_CD_TRACK_AT_ONCE = 0x2d,
IMAPI_FEATURE_PAGE_TYPE_CD_MASTERING = 0x2e,
IMAPI_FEATURE_PAGE_TYPE_DVD_DASH_WRITE = 0x2f,
IMAPI_FEATURE_PAGE_TYPE_DOUBLE_DENSITY_CD_READ = 0x30,
IMAPI_FEATURE_PAGE_TYPE_DOUBLE_DENSITY_CD_R_WRITE = 0x31,
IMAPI_FEATURE_PAGE_TYPE_DOUBLE_DENSITY_CD_RW_WRITE = 0x32,
IMAPI_FEATURE_PAGE_TYPE_LAYER_JUMP_RECORDING = 0x33,
IMAPI_FEATURE_PAGE_TYPE_CD_RW_MEDIA_WRITE_SUPPORT = 0x37,
IMAPI_FEATURE_PAGE_TYPE_BD_PSEUDO_OVERWRITE = 0x38,
IMAPI_FEATURE_PAGE_TYPE_DVD_PLUS_R_DUAL_LAYER = 0x3b,
IMAPI_FEATURE_PAGE_TYPE_BD_READ = 0x40,
IMAPI_FEATURE_PAGE_TYPE_BD_WRITE = 0x41,
IMAPI_FEATURE_PAGE_TYPE_HD_DVD_READ = 0x50,
IMAPI_FEATURE_PAGE_TYPE_HD_DVD_WRITE = 0x51,
IMAPI_FEATURE_PAGE_TYPE_POWER_MANAGEMENT = 0x100,
IMAPI_FEATURE_PAGE_TYPE_SMART = 0x101,
IMAPI_FEATURE_PAGE_TYPE_EMBEDDED_CHANGER = 0x102,
IMAPI_FEATURE_PAGE_TYPE_CD_ANALOG_PLAY = 0x103,
IMAPI_FEATURE_PAGE_TYPE_MICROCODE_UPDATE = 0x104,
IMAPI_FEATURE_PAGE_TYPE_TIMEOUT = 0x105,
IMAPI_FEATURE_PAGE_TYPE_DVD_CSS = 0x106,
IMAPI_FEATURE_PAGE_TYPE_REAL_TIME_STREAMING = 0x107,
IMAPI_FEATURE_PAGE_TYPE_LOGICAL_UNIT_SERIAL_NUMBER = 0x108,
IMAPI_FEATURE_PAGE_TYPE_MEDIA_SERIAL_NUMBER = 0x109,
IMAPI_FEATURE_PAGE_TYPE_DISC_CONTROL_BLOCKS = 0x10a,
IMAPI_FEATURE_PAGE_TYPE_DVD_CPRM = 0x10b,
IMAPI_FEATURE_PAGE_TYPE_FIRMWARE_INFORMATION = 0x10c,
IMAPI_FEATURE_PAGE_TYPE_AACS = 0x10d,
IMAPI_FEATURE_PAGE_TYPE_VCPS = 0x110
}
According to MSDN, IMAPI_FEATURE_PAGE_TYPE can contain not only this values, so be carefull.