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Disk Management Control Codes

Disk Management Control Codes

The following table identifies the control codes that are used in disk management.

In this section

Control CodeDescription

IOCTL_DISK_ARE_VOLUMES_READY

Waits for all volumes on the specified disk to be ready for use.

IOCTL_DISK_CREATE_DISK

Initializes the specified disk and disk partition table using the information in the CREATE_DISK structure.

IOCTL_DISK_DELETE_DRIVE_LAYOUT

Removes the boot signature from the master boot record, so that the disk will be formatted from sector zero to the end of the disk.

IOCTL_DISK_FORMAT_TRACKS

Formats a specified, contiguous set of tracks on a floppy disk. To provide additional parameters, use IOCTL_DISK_FORMAT_TRACKS_EX instead.

IOCTL_DISK_FORMAT_TRACKS_EX

Formats a specified, contiguous set of tracks on a floppy disk.

IOCTL_DISK_GET_CACHE_INFORMATION

Retrieves the disk cache configuration data.

IOCTL_DISK_GET_CLUSTER_INFO

Retrieves the attributes of the specified disk device.

IOCTL_DISK_GET_DISK_ATTRIBUTES

Retrieves the attributes of the specified disk device.

IOCTL_DISK_GET_DRIVE_GEOMETRY

Retrieves information about the physical disk's geometry: type, number of cylinders, tracks per cylinder, sectors per track, and bytes per sector.

IOCTL_DISK_GET_DRIVE_GEOMETRY_EX

Retrieves extended information about the physical disk's geometry: type, number of cylinders, tracks per cylinder, sectors per track, and bytes per sector.

IOCTL_DISK_GET_DRIVE_LAYOUT

Retrieves information for each entry in the partition tables for a disk.

IOCTL_DISK_GET_DRIVE_LAYOUT_EX

Retrieves extended information for each entry in the partition tables for a disk.

IOCTL_DISK_GET_LENGTH_INFO

Retrieves the length of the specified disk, volume, or partition.

IOCTL_DISK_GET_PARTITION_INFO

Retrieves information about the type, size, and nature of a disk partition.

IOCTL_DISK_GET_PARTITION_INFO_EX

Retrieves extended information about the type, size, and nature of a disk partition.

IOCTL_DISK_GROW_PARTITION

Enlarges the specified partition.

IOCTL_DISK_IS_WRITABLE

Determines whether the specified disk is writable.

IOCTL_DISK_PERFORMANCE

Enables performance counters that provide disk performance information.

IOCTL_DISK_PERFORMANCE_OFF

Disables the performance counters that provide disk performance information.

IOCTL_DISK_REASSIGN_BLOCKS

Directs the disk device to map one or more blocks to its spare-block pool.

IOCTL_DISK_REASSIGN_BLOCKS_EX

Directs the disk device to map one or more blocks to its spare-block pool.

IOCTL_DISK_RESET_SNAPSHOT_INFO

Clears all Volume Shadow Copy Service (VSS) hardware-based shadow copy (also called "snapshot") information from the disk.

To perform this operation, call the DeviceIoControl function with the following parameters.

IOCTL_DISK_SET_CACHE_INFORMATION

Sets the disk configuration data.

IOCTL_DISK_SET_CLUSTER_INFO

Sets the cluster information on a disk.

IOCTL_DISK_SET_DISK_ATTRIBUTES

Sets the attributes of the specified disk device.

IOCTL_DISK_SET_DRIVE_LAYOUT

Partitions a disk as specified by drive layout and partition information data.

IOCTL_DISK_SET_DRIVE_LAYOUT_EX

Partitions a disk according to the specified drive layout and partition information data.

IOCTL_DISK_SET_PARTITION_INFO

Sets partition information for the specified disk partition.

IOCTL_DISK_SET_PARTITION_INFO_EX

Sets partition information for the specified disk partition, including layout information for AT and EFI (Extensible Firmware Interface) partitions.

IOCTL_DISK_UPDATE_PROPERTIES

Invalidates the cached partition table and re-enumerates the device.

IOCTL_DISK_VERIFY

Verifies the specified extent on a fixed disk.

IOCTL_STORAGE_QUERY_PROPERTY

Returns the properties of a storage device or adapter. The request indicates the kind of information to retrieve, such as the inquiry data for a device or the capabilities and limitations of an adapter. IOCTL_STORAGE_QUERY_PROPERTY can also be used to determine whether the port driver supports a particular property or which fields in the property descriptor can be modified with a subsequent change-property request.

 

The following control codes are obsolete:

IOCTL_DISK_CONTROLLER_NUMBER
IOCTL_DISK_GET_DRIVE_GEOMETRY
IOCTL_DISK_GET_DRIVE_LAYOUT
IOCTL_DISK_GET_PARTITION_INFO
IOCTL_DISK_HISTOGRAM_DATA
IOCTL_DISK_HISTOGRAM_RESET
IOCTL_DISK_HISTOGRAM_STRUCTURE
IOCTL_DISK_LOGGING
IOCTL_DISK_REQUEST_DATA
IOCTL_DISK_REQUEST_STRUCTURE
IOCTL_DISK_SET_DRIVE_LAYOUT
IOCTL_DISK_SET_PARTITION_INFO

 

 

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