// storduid.h

typedef struct _STORAGE_DEVICE_UNIQUE_IDENTIFIER {
  ULONG Version;
  ULONG Size;
  ULONG StorageDeviceIdOffset;
  ULONG StorageDeviceOffset;
  ULONG DriveLayoutSignatureOffset;
} STORAGE_DEVICE_UNIQUE_IDENTIFIER, *PSTORAGE_DEVICE_UNIQUE_IDENTIFIER;
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Windows Driver Kit DDI reference (ns-storduid-_storage_device_unique_identifier)

_STORAGE_DEVICE_UNIQUE_IDENTIFIER structure

Description

The STORAGE_DEVICE_UNIQUE_IDENTIFIER structure defines a device unique identifier (DUID).

Members

`Version`

The version of the DUID.

`Size`

The size, in bytes, of the identifier header and the identifiers (IDs) that follow the header.

`StorageDeviceIdOffset`

The offset, in bytes, from the beginning of the header to the device ID descriptor (STORAGE_DEVICE_ID_DESCRIPTOR). The device ID descriptor contains the IDs that are extracted from page 0x83 of the device's vital product data (VPD).

`StorageDeviceOffset`

The offset, in bytes, from the beginning of the header to the device descriptor (STORAGE_DEVICE_DESCRIPTOR). The device descriptor contains IDs that are extracted from non-VPD inquiry data.

`DriveLayoutSignatureOffset`

The offset, in bytes, to the drive layout signature (STORAGE_DEVICE_LAYOUT_SIGNATURE).

STORAGE_DEVICE_UNIQUE_IDENTIFIER - NtDoc