STORAGE_DEVICE_LAYOUT_SIGNATURE structure (storduid.h)
The STORAGE_DEVICE_LAYOUT_SIGNATURE structure defines a device layout structure.
Syntax
typedef struct _STORAGE_DEVICE_LAYOUT_SIGNATURE {
ULONG Version;
ULONG Size;
BOOLEAN Mbr;
union {
ULONG MbrSignature;
GUID GptDiskId;
} DeviceSpecific;
} STORAGE_DEVICE_LAYOUT_SIGNATURE, *PSTORAGE_DEVICE_LAYOUT_SIGNATURE;
Members
Version
The version of the DUID.
Size
The size, in bytes, of this STORAGE_DEVICE_LAYOUT_SIGNATURE structure.
Mbr
A Boolean value that indicates whether the partition table of the disk is formatted with a master boot record (MBR). If TRUE, the partition table of the disk is formatted with a master boot record (MBR). If FALSE, the disk has a GUID partition table (GPT).
DeviceSpecific
DeviceSpecific.MbrSignature
The signature value, which uniquely identifies the disk.
DeviceSpecific.GptDiskId
The GUID that uniquely identifies the disk.
Remarks
The device layout signature contributes to the definition of a device unique identifier (DUID). For more information about DUIDs, see the description of the STORAGE_DEVICE_UNIQUE_IDENTIFIER structure.
Requirements
| Requirement | Value |
|---|---|
| Header | storduid.h (include Storduid.h) |