The Win32_CDROMDrive WMI class represents a CD-ROM drive on a computer system running Windows. Be aware that the name of the drive does not correspond to the logical drive letter assigned to the device.

The following syntax is simplified from Managed Object Format (MOF) code and includes all of the inherited properties. Properties are listed in alphabetic order, not MOF order.

class Win32_CDROMDrive : CIM_CDROMDrive
{
  uint16 Availability;
  uint16 Capabilities[];
  string CapabilityDescriptions[];
  string Caption;
  string CompressionMethod;
  uint32 ConfigManagerErrorCode;
  boolean ConfigManagerUserConfig;
  string CreationClassName;
  uint64 DefaultBlockSize;
  string Description;
  string DeviceID;
  string Drive;
  boolean DriveIntegrity;
  boolean ErrorCleared;
  string ErrorDescription;
  string ErrorMethodology;
  uint16 FileSystemFlags;
  uint32 FileSystemFlagsEx;
  string Id;
  datetime InstallDate;
  uint32 LastErrorCode;
  string Manufacturer;
  uint64 MaxBlockSize;
  uint32 MaximumComponentLength;
  uint64 MaxMediaSize;
  boolean MediaLoaded;
  string MediaType;
  string MfrAssignedRevisionLevel;
  uint64 MinBlockSize;
  string Name;
  boolean NeedsCleaning;
  uint32 NumberOfMediaSupported;
  string PNPDeviceID;
  uint16 PowerManagementCapabilities[];
  boolean PowerManagementSupported;
  string RevisionLevel;
  uint32 SCSIBus;
  uint16 SCSILogicalUnit;
  uint16 SCSIPort;
  uint16 SCSITargetId;
  uint16 SerialNumber;
  uint64 Size;
  string Status;
  uint16 StatusInfo;
  string SystemCreationClassName;
  string SystemName;
  real64 TransferRate;
  string VolumeName;
  string VolumeSerialNumber;
};

Methods

The Win32_CDROMDrive class defines the following methods.

Properties

The Win32_CDROMDrive class defines the following properties.

Availability

Data type: uint16
Access type: Read-only

Availability and status of the device. Inherited from CIM_LogicalDevice.

Value	Meaning
1 0x1	Other
2 0x2	Unknown
3 0x3	Running or Full Power
4 0x4	Warning
5 0x5	In Test
6 0x6	Not Applicable
7 0x7	Power Off
8 0x8	Off Line
9 0x9	Off Duty
10 0xA	Degraded
11 0xB	Not Installed
12 0xC	Install Error
13 0xD	Power Save - Unknown The device is known to be in a power save mode, but its exact status is unknown.
14 0xE	Power Save - Low Power Mode The device is in a power save state but still functioning, and may exhibit degraded performance.
15 0xF	Power Save - Standby The device is not functioning, but could be brought to full power quickly.
16 0x10	Power Cycle
17 0x11	Power Save - Warning The device is in a warning state, though also in a power save mode.

Capabilities

Data type: uint16 array
Access type: Read-only

Array of capabilities of the media access device. For example, the device may support random access (3), removable media (7), and automatic cleaning (9). This property is inherited from CIM_MediaAccessDevice.

Value	Meaning
0	Unknown
1	Other
2	Sequential Access
3	Random Access
4	Supports Writing
5	Encryption
6	Compression
7	Supports Removable Media
8	Manual Cleaning
9	Automatic Cleaning
10	SMART Notification
11	Supports Dual-Sided Media
12	Predismount Eject Not Required

CapabilityDescriptions

Data type: string array
Access type: Read-only

Array of more detailed explanations for any of the access device features indicated in the Capabilities array. Each entry of this array is related to the entry in the Capabilities array that is located at the same index. This property is inherited from CIM_MediaAccessDevice.

Caption

Data type: string
Access type: Read-only

Short description of the object—a one-line string. This property is inherited from CIM_ManagedSystemElement.

CompressionMethod

Data type: string
Access type: Read-only

Algorithm or tool used by the device to support compression. If it is not possible or not desired to describe the compression scheme (perhaps because it is not known), use the following words: "Unknown" to represent that it is not known whether the device supports compression capabilities; "Compressed" to represent that the device supports compression capabilities but either its compression scheme is not known or not disclosed; and "Not Compressed" to represent that the device does not support compression capabilities. This property is inherited from CIM_MediaAccessDevice.

ConfigManagerErrorCode

Data type: uint32
Access type: Read-only

Windows Configuration Manager error code.

Value	Meaning
0 0x0	Device is working properly.
1 0x1	Device is not configured correctly.
2 0x2	Windows cannot load the driver for this device.
3 0x3	Driver for this device might be corrupted, or the system may be low on memory or other resources.
4 0x4	Device is not working properly. One of its drivers or the registry might be corrupted.
5 0x5	Driver for the device requires a resource that Windows cannot manage.
6 0x6	Boot configuration for the device conflicts with other devices.
7 0x7	Cannot filter.
8 0x8	Driver loader for the device is missing.
9 0x9	Device is not working properly. The controlling firmware is incorrectly reporting the resources for the device.
10 0xA	Device cannot start.
11 0xB	Device failed.
12 0xC	Device cannot find enough free resources to use.
13 0xD	Windows cannot verify the device's resources.
14 0xE	Device cannot work properly until the computer is restarted.
15 0xF	Device is not working properly due to a possible re-enumeration problem.
16 0x10	Windows cannot identify all of the resources that the device uses.
17 0x11	Device is requesting an unknown resource type.
18 0x12	Device drivers must be reinstalled.
19 0x13	Failure using the VxD loader.
20 0x14	Registry might be corrupted.
21 0x15	System failure. If changing the device driver is ineffective, see the hardware documentation. Windows is removing the device.
22 0x16	Device is disabled.
23 0x17	System failure. If changing the device driver is ineffective, see the hardware documentation.
24 0x18	Device is not present, not working properly, or does not have all of its drivers installed.
25 0x19	Windows is still setting up the device.
26 0x1A	Windows is still setting up the device.
27 0x1B	Device does not have valid log configuration.
28 0x1C	Device drivers are not installed.
29 0x1D	Device is disabled. The device firmware did not provide the required resources.
30 0x1E	Device is using an IRQ resource that another device is using.
31 0x1F	Device is not working properly. Windows cannot load the required device drivers.

ConfigManagerUserConfig

Data type: boolean
Access type: Read-only

If True, the device is using a user-defined configuration. This property is inherited from CIM_LogicalDevice.

CreationClassName

Data type: string
Access type: Read-only

Name of the first concrete class that appears in the inheritance chain used in the creation of an instance. When used with the other key properties of the class, the property allows all instances of this class and its subclasses to be identified uniquely. This property is inherited from CIM_LogicalDevice.

DefaultBlockSize

Data type: uint64
Access type: Read-only

Default block size, in bytes, for this device. This property is inherited from CIM_MediaAccessDevice.

For more information about using uint64 values in scripts, see Scripting in WMI.

Description

Data type: string
Access type: Read-only

Description of the object. This property is inherited from CIM_ManagedSystemElement.

DeviceID

Data type: string
Access type: Read-only
Qualifiers: Key

Unique identifier for a CD-ROM drive. This property is inherited from CIM_LogicalDevice.

Drive

Data type: string
Access type: Read-only

Drive letter of the CD-ROM drive.

Example: "d:\"

DriveIntegrity

Data type: boolean
Access type: Read-only

If True, files can be accurately read from the CD device. This is achieved by reading a block of data twice and comparing the data against itself.

ErrorCleared

Data type: boolean
Access type: Read-only

If True, the error reported in LastErrorCode is now cleared.

ErrorDescription

Data type: string
Access type: Read-only

More information about the error recorded in LastErrorCode, and information about corrective actions that can be taken.

ErrorMethodology

Data type: string
Access type: Read-only

Type of error detection and correction supported by this device. This property is inherited from CIM_MediaAccessDevice.

FileSystemFlags

Data type: uint16
Access type: Read-only
Qualifiers: Deprecated

This property is obsolete. In place of this property, use FileSystemFlagsEx.

FileSystemFlagsEx

Data type: uint32
Access type: Read-only

File system flags associated with the Windows CD-ROM drive. This parameter can be any combination of flags, but FS_FILE_COMPRESSION and FS_VOL_IS_COMPRESSED are mutually exclusive.

Value	Meaning
CASE_SENSITIVE_SEARCH 1 0x1	The file system supports case-sensitive file names.
CASE_PRESERVED_NAMES 2 0x2	The file system preserves the case of file names when it places a name on a disk.
UNICODE_ON_DISK 4 0x4	The file system supports Unicode in file names as they appear on the disk.
PERSISTENT_ACLS 8 0x8	The file system preserves and enforces access control lists (ACLs). For example, the NTFS file system preserves and enforces ACLs and the FAT file system does not.
FILE_COMPRESSION 16 0x10	The file system supports file-based compression.
VOLUME_QUOTAS 32 0x20	The file system supports disk quotas.
SUPPORTS_SPARSE_FILES 64 0x40	The file system supports spare files.
SUPPORTS_REPARSE_POINTS 128 0x80	The file system supports reparse points.
SUPPORTS_REMOTE_STORAGE 256 0x100	The file system supports the remote storage of files.
SUPPORTS_LONG_NAMES 16384 0x4000	The file system supports file names that are longer than eight characters.
VOLUME_IS_COMPRESSED 32768 0x8000	The specified disk volume is a compressed volume, for example, a DougbleSpace volume.
READ_ONLY_VOLUME 524289 0x80001	The specified volume is read-only. Windows 2000, Windows NT 4.0, and Windows Me/98/95:  This value is not supported.
SUPPORTS_OBJECT_IDS 65536 0x10000	The file system supports object identifiers.
SUPPORTS_ENCRYPTION 131072 0x20000	The file system supports the Encrypted File System (EFS).
SUPPORTS_NAMED_STREAMS 262144 0x40000	The file system supports named streams.

Example: 0

Id

Data type: string
Access type: Read-only

Drive letter that uniquely identifies this CD-ROM drive.

Example: "d:\"

InstallDate

Data type: datetime
Access type: Read-only

Date and time the object is installed. This property does not need a value to indicate that the object is installed. This property is inherited from CIM_ManagedSystemElement.

LastErrorCode

Data type: uint32
Access type: Read-only

Last error code reported by the logical device.

Manufacturer

Data type: string
Access type: Read-only

Manufacturer of the Windows CD-ROM drive.

Example: "PLEXTOR"

MaxBlockSize

Data type: uint64
Access type: Read-only

Maximum block size, in bytes, for media accessed by this device. This property is inherited from CIM_MediaAccessDevice.

For more information about using uint64 values in scripts, see Scripting in WMI.

MaximumComponentLength

Data type: uint32
Access type: Read-only

Maximum length of a filename component supported by the Windows CD-ROM drive. A file name component the portion of a file name between backslashes. The value can be used to indicate that long names are supported by the specified file system. For example, for a FAT file system supporting long names, the function stores the value 255, rather than the previous 8.3 indicator. Long names can also be supported on systems that use the NTFS file system.

Example: 255

MaxMediaSize

Data type: uint64
Access type: Read-only

Maximum size, in kilobytes, of media supported by this device. This property is inherited from CIM_MediaAccessDevice.

For more information about using uint64 values in scripts, see Scripting in WMI.

MediaLoaded

Data type: boolean
Access type: Read-only

If True, a CD-ROM is in the drive.

MediaType

Data type: string
Access type: Read-only

Type of media that can be used or accessed by this device. Possible values are:

CdRomOnly

CdRomWrite

DVDRomOnly

DVDRomWrite

Windows Server 2003, Windows XP, Windows 2000, and Windows NT 4.0:  Possible values are:

Random Access

Supports Writing

Removable Media

CD-ROM

MfrAssignedRevisionLevel

Data type: string
Access type: Read-only

Firmware revision level that is assigned by the manufacturer.

Windows Server 2003, Windows XP, Windows 2000, Windows NT 4.0, and Windows Me/98/95:  This property is not available.

MinBlockSize

Data type: uint64
Access type: Read-only

Minimum block size, in bytes, for media accessed by this device. This property is inherited from CIM_MediaAccessDevice.

For more information about using uint64 values in scripts, see Scripting in WMI.

Name

Data type: string
Access type: Read-only

Label for the object. When subclassed, the property can be overridden to be a key property. This property is inherited from CIM_ManagedSystemElement.

NeedsCleaning

Data type: boolean
Access type: Read-only

If True, the media access device needs cleaning. Whether manual or automatic cleaning is possible is indicated in the Capabilities property. This property is inherited from CIM_MediaAccessDevice.

NumberOfMediaSupported

Data type: uint32
Access type: Read-only

Maximum number of media that can be supported or inserted, when the media access device supports multiple individual media. This property is inherited from CIM_MediaAccessDevice.

PNPDeviceID

Data type: string
Access type: Read-only

Windows Plug and Play device identifier of the logical device. This property is inherited from CIM_LogicalDevice.

Example: "*PNP030b"

PowerManagementCapabilities

Data type: uint16 array
Access type: Read-only

Array of the specific power-related capabilities of a logical device. This property is inherited from CIM_LogicalDevice.

Value	Meaning
0 0x0	Unknown
1 0x1	Not Supported
2 0x2	Disabled
3 0x3	Enabled The power management features are currently enabled but the exact feature set is unknown or the information is unavailable.
4 0x4	Power Saving Modes Entered Automatically The device can change its power state based on usage or other criteria.
5 0x5	Power State Settable The SetPowerState method is supported. This method is found on the parent CIM_LogicalDevice class and can be implemented. For more information, see Designing Managed Object Format (MOF) Classes.
6 0x6	Power Cycling Supported The SetPowerState method can be invoked with the PowerStateparameter set to 5 (Power Cycle).
7 0x7	Timed Power-On Supported The SetPowerState method can be invoked with the PowerState parameter set to 5 (Power Cycle) and Time set to a specific date and time, or interval, for power-on.

PowerManagementSupported

Data type: boolean
Access type: Read-only

If True, the device can be power-managed, which means that it can be put into suspend mode, and so on. The property does not indicate that power management features are currently enabled, only that the logical device is capable of power management. This property is inherited from CIM_LogicalDevice.

RevisionLevel

Data type: string
Access type: Read-only

Firmware revision level of the Windows CD-ROM drive.

SCSIBus

Data type: uint32
Access type: Read-only

SCSI bus number for the disk drive.

Example: 0

SCSILogicalUnit

Data type: uint16
Access type: Read-only

SCSI logical unit number (LUN) of the disk drive. The LUN is used to designate which SCSI controller is being accessed in a system with more than one controller being used. The SCSI device identifier is similar, but is the designation for multiple devices on one controller.

Example: 0

SCSIPort

Data type: uint16
Access type: Read-only

SCSI port number of the disk drive.

Example: 1

SCSITargetId

Data type: uint16
Access type: Read-only

SCSI identifier number of the Windows CD-ROM drive.

Example: 0

SerialNumber

Data type: uint16
Access type: Read-only

Number supplied by the manufacturer that identifies the physical media. Example: WD-WM3493798728.

Windows Server 2003, Windows XP, Windows 2000, Windows NT 4.0, and Windows Me/98/95:  This property is not available.

Size

Data type: uint64
Access type: Read-only
Qualifiers: Units(Bytes)

Size of the disk drive.

For more information about using uint64 values in scripts, see Scripting in WMI.

Status

Data type: string
Access type: Read-only

Current status of the object. Various operational and nonoperational statuses can be defined. Operational statuses include: "OK", "Degraded", and "Pred Fail" (an element, such as a SMART-enabled hard disk drive, may be functioning properly but predicting a failure in the near future). Nonoperational statuses include: "Error", "Starting", "Stopping", and "Service". The latter, "Service", could apply during mirror-resilvering of a disk, reload of a user permissions list, or other administrative work. Not all such work is online, yet the managed element is neither "OK" nor in one of the other states. This property is inherited from CIM_ManagedSystemElement.

The values are:

"OK"

"Error"

"Degraded"

"Unknown"

"Pred Fail"

"Starting"

"Stopping"

"Service"

"Stressed"

"NonRecover"

"No Contact"

"Lost Comm"

StatusInfo

Data type: uint16
Access type: Read-only

State of the logical device. If this property does not apply to the logical device, the value 5 (Not Applicable) should be used. This property is inherited from CIM_LogicalDevice.

Value	Meaning
1 0x1	Other
2 0x2	Unknown
3 0x3	Enabled
4 0x4	Disabled
5 0x5	Not Applicable

SystemCreationClassName

Data type: string
Access type: Read-only

Value of the scoping computer's CreationClassName property.

SystemName

Data type: string
Access type: Read-only

Name of the scoping system.

TransferRate

Data type: real64
Access type: Read-only
Qualifiers: Units(KiloBytes per Second)

Transfer rate of the CD-ROM drive. A value of -1 indicates that the rate cannot be determined. When this happens, the CD is not in the drive.

VolumeName

Data type: string
Access type: Read-only

Volume name of the Windows CD-ROM drive.

VolumeSerialNumber

Data type: string
Access type: Read-only

Volume serial number of the media in the CD-ROM drive.

Example: A8C3-D032

Remarks

The Win32_CDROMDrive class is derived from CIM_CDROMDrive which derives from CIM_MediaAccessDevice. The CIM_MediaAccessDevice class derives from CIM_LogicalDevice.

Examples

For script code examples, see WMI Tasks for Scripts and Applications and the TechNet ScriptCenter Script Repository.

For C++ code examples, see WMI C++ Application Examples.

Requirements

See Also

Computer System Hardware Classes

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Build date: 8/20/2008