STORAGE_DEVICE_NUMBER structure (winioctl.h)

Article
04/02/2021

Contains information about a device. This structure is used by the IOCTL_STORAGE_GET_DEVICE_NUMBER control code.

Syntax

typedef struct _STORAGE_DEVICE_NUMBER {
  DEVICE_TYPE DeviceType;
  DWORD       DeviceNumber;
  DWORD       PartitionNumber;
} STORAGE_DEVICE_NUMBER, *PSTORAGE_DEVICE_NUMBER;

Members

DeviceType

The type of device. Values from 0 through 32,767 are reserved for use by Microsoft. Values from 32,768 through 65,535 are reserved for use by other vendors. The following values are defined by Microsoft:

FILE_DEVICE_8042_PORT

FILE_DEVICE_ACPI

FILE_DEVICE_BATTERY

FILE_DEVICE_BEEP

FILE_DEVICE_BLUETOOTH

FILE_DEVICE_BUS_EXTENDER

FILE_DEVICE_CD_ROM

FILE_DEVICE_CD_ROM_FILE_SYSTEM

FILE_DEVICE_CHANGER

FILE_DEVICE_CONTROLLER

FILE_DEVICE_CRYPT_PROVIDER

FILE_DEVICE_DATALINK

FILE_DEVICE_DFS

FILE_DEVICE_DFS_FILE_SYSTEM

FILE_DEVICE_DFS_VOLUME

FILE_DEVICE_DISK

FILE_DEVICE_DISK_FILE_SYSTEM

FILE_DEVICE_DVD

FILE_DEVICE_FILE_SYSTEM

FILE_DEVICE_FIPS

FILE_DEVICE_FULLSCREEN_VIDEO

FILE_DEVICE_INFINIBAND

FILE_DEVICE_INPORT_PORT

FILE_DEVICE_KEYBOARD

FILE_DEVICE_KS

FILE_DEVICE_KSEC

FILE_DEVICE_MAILSLOT

FILE_DEVICE_MASS_STORAGE

FILE_DEVICE_MIDI_IN

FILE_DEVICE_MIDI_OUT

FILE_DEVICE_MODEM

FILE_DEVICE_MOUSE

FILE_DEVICE_MULTI_UNC_PROVIDER

FILE_DEVICE_NAMED_PIPE

FILE_DEVICE_NETWORK

FILE_DEVICE_NETWORK_BROWSER

FILE_DEVICE_NETWORK_FILE_SYSTEM

FILE_DEVICE_NETWORK_REDIRECTOR

FILE_DEVICE_NULL

FILE_DEVICE_PARALLEL_PORT

FILE_DEVICE_PHYSICAL_NETCARD

FILE_DEVICE_PRINTER

FILE_DEVICE_SCANNER

FILE_DEVICE_SCREEN

FILE_DEVICE_SERENUM

FILE_DEVICE_SERIAL_MOUSE_PORT

FILE_DEVICE_SERIAL_PORT

FILE_DEVICE_SMARTCARD

FILE_DEVICE_SMB

FILE_DEVICE_SOUND

FILE_DEVICE_STREAMS

FILE_DEVICE_TAPE

FILE_DEVICE_TAPE_FILE_SYSTEM

FILE_DEVICE_TERMSRV

FILE_DEVICE_TRANSPORT

FILE_DEVICE_UNKNOWN

FILE_DEVICE_VDM

FILE_DEVICE_VIDEO

FILE_DEVICE_VIRTUAL_DISK

FILE_DEVICE_VMBUS

FILE_DEVICE_WAVE_IN

FILE_DEVICE_WAVE_OUT

FILE_DEVICE_WPD

DeviceNumber

The number of this device.

PartitionNumber

The partition number of the device, if the device can be partitioned. Otherwise, this member is –1.

Remarks

The values in the STORAGE_DEVICE_NUMBER structure are guaranteed to remain unchanged until the device is removed or the system is restarted. They are not guaranteed to be persistent across device or system restarts.

Requirements

Requirement	Value
Minimum supported client	Windows XP
Minimum supported server	Windows Server 2003
Header	winioctl.h (include Windows.h)