DISK_EXTENT structure (winioctl.h)

Represents a disk extent.

Syntax

typedef struct _DISK_EXTENT {
 DWORD DiskNumber;
 LARGE_INTEGER StartingOffset;
 LARGE_INTEGER ExtentLength;
} DISK_EXTENT, *PDISK_EXTENT;

Members

DiskNumber

The number of the disk that contains this extent.

This is the same number that is used to construct the name of the disk, for example, the X in "\\?\PhysicalDriveX" or "\\?\\HarddiskX".

StartingOffset

The offset from the beginning of the disk to the extent, in bytes.

ExtentLength

The number of bytes in this extent.

Requirements

See also

• IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS
• LARGE_INTEGER
• VOLUME_DISK_EXTENTS