DISK_GEOMETRY_EX structure (winioctl.h)
Describes the extended geometry of disk devices and media.
typedef struct _DISK_GEOMETRY_EX {
DISK_GEOMETRY Geometry;
LARGE_INTEGER DiskSize;
BYTE Data[1];
} DISK_GEOMETRY_EX, *PDISK_GEOMETRY_EX;
Geometry
A DISK_GEOMETRY structure.
DiskSize
The disk size, in bytes. See LARGE_INTEGER.
Data[1]
Any additional data. For more information, see Remarks.
DISK_GEOMETRY_EX is a variable-length structure composed of a DISK_GEOMETRY structure followed by a DISK_PARTITION_INFO structure and a DISK_DETECTION_INFO structure. Because the detection information is not at a fixed location within the DISK_GEOMETRY_EX structure, use the following macro to access the DISK_DETECTION_INFO structure.
PDISK_DETECTION_INFO DiskGeometryGetDetect(
PDISK_GEOMETRY_EX Geometry
);
Similarly, use the following macro to access the DISK_PARTITION_INFO structure.
PDISK_PARTITION_INFO DiskGeometryGetPartition(
PDISK_GEOMETRY_EX Geometry
);
The information returned does not include the number of partitions nor the partition information contained in the DISK_PARTITION_INFO structure. To obtain this information, use the IOCTL_DISK_GET_DRIVE_LAYOUT_EX control code.
Requirement | Value |
---|---|
Minimum supported client | Windows XP [desktop apps only] |
Minimum supported server | Windows Server 2003 [desktop apps only] |
Header | winioctl.h (include Windows.h) |
DISK_GEOMETRY, DISK_DETECTION_INFO, DISK_PARTITION_INFO, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX