win32 diskdrive class

7/28/2019 Win32 DiskDrive Class

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Win32_DiskDrive class

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The Win32_DiskDrive WMI class represents a physical disk drive as seen by a computer running the

Windows operating system. Any interface to a Windows physical disk drive is a descendent (or member)

of this class. The features of the disk drive seen through this object correspond to the logical and

management characteristics of the drive. In some cases, this may not reflect the actual physical

characteristics of the device. Any object based on another logical device would not be a member of this

class.

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.

Syntax

class Win32_DiskDrive : CIM_DiskDrive

{

uint16 Availability;

uint32 BytesPerSector;

uint16 Capabilities[];

string CapabilityDescriptions[];

string Caption;

string CompressionMethod;

uint32 ConfigManagerErrorCode;

boolean ConfigManagerUserConfig;

string CreationClassName;

uint64 DefaultBlockSize;


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string Description;

string DeviceID;

boolean ErrorCleared;

string ErrorDescription;

string ErrorMethodology;

string FirmwareRevision;

uint32 Index;

datetime InstallDate;

string InterfaceType;

uint32 LastErrorCode;

string Manufacturer;

uint64 MaxBlockSize;

uint64 MaxMediaSize;

boolean MediaLoaded;

string MediaType;

uint64 MinBlockSize;

string Model;

string Name;

boolean NeedsCleaning;

uint32 NumberOfMediaSupported;

uint32 Partitions;

string PNPDeviceID;

uint16 PowerManagementCapabilities[];

boolean PowerManagementSupported;

uint32 SCSIBus;


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uint16 SCSILogicalUnit;

uint16 SCSIPort;

uint16 SCSITargetId;

uint32 SectorsPerTrack;

string SerialNumber;

uint32 Signature;

uint64 Size;

string Status;

uint16 StatusInfo;

string SystemCreationClassName;

string SystemName;

uint64 TotalCylinders;

uint32 TotalHeads;

uint64 TotalSectors;

uint64 TotalTracks;

uint32 TracksPerCylinder;

};

Members

The Win32_DiskDrive class has these types of members:

Methods

Properties

Methods

The Win32_DiskDrive class has these methods.Method Description


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Reset

Not implemented. To implement this method, see the Reset method in CIM_DiskDrive for

documentation.

SetPowerState

Not implemented. To implement this method, see the SetPowerState method in CIM_DiskDrive for

documentation.

Properties

The Win32_DiskDrive class has these 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


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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)


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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


Qualifiers: Units (Bytes)

Number of bytes in each sector for the physical disk drive.

Example: 512

Capabilities

Data type: uint16 array



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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


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11

Supports Dual-Sided Media

12

Ejection Prior to Drive Dismount Not Required

CapabilityDescriptions

Data type: string array


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


Short description of the object. This property is inherited from CIM_ManagedSystemElement.

CompressionMethod

Data type: string



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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


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.


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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)


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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.


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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


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

CIM_LogicalDevice.

CreationClassName

Data type: string


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


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Data type: uint64


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


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

DeviceID

Data type: string


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



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If True, the error reported in LastErrorCode is now cleared. This property is inherited from

CIM_LogicalDevice.

ErrorDescription

Data type: string


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


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


FirmwareRevision

Data type: string


Revision for the disk drive firmware that is assigned by the manufacturer.

Windows Server 2003 and Windows XP: This property is not available.

Index

Data type: uint32



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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


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


Interface type of physical disk drive.

The values are:

SCSI

HDC


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IDE

USB

1394

LastErrorCode

Data type: uint32


Last error code reported by the logical device. This property is inherited from CIM_LogicalDevice.

Manufacturer

Data type: string


Name of the disk drive manufacturer.

Example: "Seagate"

MaxBlockSize

Data type: uint64



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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 and Windows XP: Possible values are:

Removable media

Fixed hard disk

Unknown

MinBlockSize

Data type: uint64


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



Model

Data type: string



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Manufacturer's model number of the disk drive.

Example: "ST32171W"

Name

Data type: string


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


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


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



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Number of partitions on this physical disk drive that are recognized by the operating system.

Example: 2

PNPDeviceID

Data type: string


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

CIM_LogicalDevice.

Example: "*PNP030b"

PowerManagementCapabilities

Data type: uint16 array


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)


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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.


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PowerManagementSupported

Data type: boolean


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


SCSI bus number of the disk drive.

Example: 0

SCSILogicalUnit

Data type: uint16


SCSI logical unit number (LUN) of the disk drive.

Example: 0

SCSIPort

Data type: uint16


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SCSI port number of the disk drive.

Example: 0

SCSITargetId

Data type: uint16


SCSI identifier number of the disk drive.

Example: 0

SectorsPerTrack

Data type: uint32


Number of sectors in each track for this physical disk drive.

Example: 63

SerialNumber

Data type: string



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Number allocated by the manufacturer to identify the physical media.

Example: WD-WM3493798728

Windows Server 2003 and Windows XP: This property is not available.

Signature

Data type: uint32


Disk identification. This property can be used to identify a shared resource. This property has been

added for Windows XP.

Size

Data type: uint64


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.


Status

Data type: string


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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


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Data type: string


Name of the scoping system. This property is inherited from CIM_LogicalDevice.

TotalCylinders

Data type: uint64


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


TotalHeads

Data type: uint32


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


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Data type: uint64


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


TotalTracks

Data type: uint64


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


TracksPerCylinder

Data type: uint32



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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

Remarks

The Win32_DiskDrive class is derived from CIM_DiskDrive 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

Minimum supported client Windows XP [desktop apps only]

Minimum supported server Windows Server 2003 [desktop apps only]

Namespace

\root\CIMV2

MOF Cimwin32.mof


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win32 diskdrive class

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