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DISK_GEOMETRY structure (winioctl.h)

  • Article

Describes the geometry of disk devices and media.

Syntax

typedef struct _DISK_GEOMETRY {
  LARGE_INTEGER Cylinders;
  MEDIA_TYPE    MediaType;
  DWORD         TracksPerCylinder;
  DWORD         SectorsPerTrack;
  DWORD         BytesPerSector;
} DISK_GEOMETRY, *PDISK_GEOMETRY;

Members

Cylinders

The number of cylinders. See LARGE_INTEGER.

MediaType

The type of media. For a list of values, see MEDIA_TYPE.

TracksPerCylinder

The number of tracks per cylinder.

SectorsPerTrack

The number of sectors per track.

BytesPerSector

The number of bytes per sector.

Requirements

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)

See also

IOCTL_DISK_GET_DRIVE_GEOMETRY, IOCTL_STORAGE_GET_MEDIA_TYPES, MEDIA_TYPE