For security reasons, a user connecting from a remote computer must have the SC_MANAGER_CONNECT privilege enabled to be able to enumerate this class. For more information, see Service Security and Access Rights.
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.
- 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.
|
- BytesPerSector
-
- Data type: uint32
- Access type: Read-only
- Qualifiers: Units(Bytes)
Number of bytes in each sector for the physical disk drive.
Example: 512
- 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
| Ejection Prior to Drive Dismount Not Required
|
- CapabilityDescriptions
-
- Data type: string array
- Access type: Read-only
List of more detailed explanations for any of the access device features indicated in the Capabilities array. Note, 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 (one-line string) of the object. 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. This property is inherited from CIM_MediaAccessDevice.
The name of the compression algorithm or one of the following values.
| Value | Meaning |
|---|
- Unknown
| Whether the device supports compression capabilities or not is not known.
|
- Compressed
| The device supports compression capabilities but its compression scheme is not known or not disclosed.
|
- Not Compressed
| The device does not support compression.
|
- 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 to appear 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 uniquely identified. 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 of the disk drive with other devices on the system. This property is inherited from CIM_LogicalDevice.
- ErrorCleared
-
- Data type: boolean
- Access type: Read-only
If True, the error reported in LastErrorCode is now cleared. This property is inherited from CIM_LogicalDevice.
- ErrorDescription
-
- Data type: string
- Access type: Read-only
More information about the error recorded in LastErrorCode, and information on any corrective actions that may be taken. This property is inherited from CIM_LogicalDevice.
- 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.
- FirmwareRevision
-
- Data type: string
- Access type: Read-only
Revision for the disk drive firmware that is assigned by the manufacturer.
Windows Server 2003, Windows XP, Windows 2000, and Windows NT 4.0: This property is not available.
- Index
-
- Data type: uint32
- Access type: Read-only
Physical drive number of the given drive. This property is filled by the GetDriveMapInfo method. A value of 0xFF indicates that the given drive does not map to a physical drive.
Example: 1
- InstallDate
-
- Data type: datetime
- Access type: Read-only
Date and time the object was installed. This property does not need a value to indicate that the object is installed. This property is inherited from CIM_ManagedSystemElement.
- InterfaceType
-
- Data type: string
- Access type: Read-only
Interface type of physical disk drive.
The values are:
SCSI
HDC
IDE
USB
1394
- LastErrorCode
-
- Data type: uint32
- Access type: Read-only
Last error code reported by the logical device. This property is inherited from CIM_LogicalDevice.
- Manufacturer
-
- Data type: string
- Access type: Read-only
Name of the disk drive manufacturer.
Example: "Seagate"
- 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.
- MaxMediaSize
-
- Data type: uint64
- Access type: Read-only
Maximum media 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, the media for a disk drive is loaded, which means that the device has a readable file system and is accessible. For fixed disk drives, this property will always be TRUE.
- MediaType
-
- Data type: string
- Access type: Read-only
Type of media used or accessed by this device.
Starting with Windows Vista, possible values are:
- External hard disk media
- Removable media other than floppy
- Fixed hard disk media
- Format is unknown
Windows Server 2003, Windows XP, Windows 2000, and Windows NT 4.0: Possible values are:
- Removable media
- Fixed hard disk
- Unknown
- 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.
- Model
-
- Data type: string
- Access type: Read-only
Manufacturer's model number of the disk drive.
Example: "ST32171W"
- Name
-
- Data type: string
- Access type: Read-only
Label by which the object is known. 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 which can be supported or inserted (when the media access device supports multiple individual media). This property is inherited from CIM_MediaAccessDevice.
- Partitions
-
- Data type: uint32
- Access type: Read-only
Number of partitions on this physical disk drive that are recognized by the operating system.
Example: 2
- 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 PowerState parameter 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 (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.
- SCSIBus
-
- Data type: uint32
- Access type: Read-only
SCSI bus number of the disk drive.
Example: 0
- SCSILogicalUnit
-
- Data type: uint16
- Access type: Read-only
SCSI logical unit number (LUN) of the disk drive.
Example: 0
- SCSIPort
-
- Data type: uint16
- Access type: Read-only
SCSI port number of the disk drive.
Example: 0
- SCSITargetId
-
- Data type: uint16
- Access type: Read-only
SCSI identifier number of the disk drive.
Example: 0
- SectorsPerTrack
-
- Data type: uint32
- Access type: Read-only
Number of sectors in each track for this physical disk drive.
Example: 63
- SerialNumber
-
- Data type: string
- Access type: Read-only
Number allocated by the manufacturer to identify the physical media.
Example: WD-WM3493798728
Windows Server 2003, Windows XP, Windows 2000, and Windows NT 4.0: This property is not available.
- Signature
-
- Data type: uint32
- Access type: Read-only
Disk identification. This property can be used to identify a shared resource. This property has been added for Windows XP.
- Size
-
- Data type: uint64
- Access type: Read-only
- Qualifiers: Units(Bytes)
Size of the disk drive. It is calculated by multiplying the total number of cylinders, tracks in each cylinder, sectors in each track, and bytes in each sector.
For more information about using uint64 values in scripts, see Scripting in WMI.
- Status
-
- Data type: string
- Access type: Read-only
- Qualifiers: MaxLen(10)
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.
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. This property is inherited from CIM_LogicalDevice.
- SystemName
-
- Data type: string
- Access type: Read-only
Name of the scoping system. This property is inherited from CIM_LogicalDevice.
- TotalCylinders
-
- Data type: uint64
- Access type: Read-only
Total number of cylinders on the physical disk drive. Note: the value for this property is obtained through extended functions of BIOS interrupt 13h. The value may be inaccurate if the drive uses a translation scheme to support high-capacity disk sizes. Consult the manufacturer for accurate drive specifications.
Example: 657
For more information about using uint64 values in scripts, see Scripting in WMI.
- TotalHeads
-
- Data type: uint32
- Access type: Read-only
Total number of heads on the disk drive. Note: the value for this property is obtained through extended functions of BIOS interrupt 13h. The value may be inaccurate if the drive uses a translation scheme to support high-capacity disk sizes. Consult the manufacturer for accurate drive specifications.
- TotalSectors
-
- Data type: uint64
- Access type: Read-only
Total number of sectors on the physical disk drive. Note: the value for this property is obtained through extended functions of BIOS interrupt 13h. The value may be inaccurate if the drive uses a translation scheme to support high-capacity disk sizes. Consult the manufacturer for accurate drive specifications.
Example: 2649024
For more information about using uint64 values in scripts, see Scripting in WMI.
- TotalTracks
-
- Data type: uint64
- Access type: Read-only
Total number of tracks on the physical disk drive. Note: the value for this property is obtained through extended functions of BIOS interrupt 13h. The value may be inaccurate if the drive uses a translation scheme to support high-capacity disk sizes. Consult the manufacturer for accurate drive specifications.
Example: 42048
For more information about using uint64 values in scripts, see Scripting in WMI.
- TracksPerCylinder
-
- Data type: uint32
- Access type: Read-only
Number of tracks in each cylinder on the physical disk drive. Note: the value for this property is obtained through extended functions of BIOS interrupt 13h. The value may be inaccurate if the drive uses a translation scheme to support high-capacity disk sizes. Consult the manufacturer for accurate drive specifications.
Example: 64