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VOLUME_PHYSICAL_OFFSET structure (ntddvol.h)

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The VOLUME_PHYSICAL_OFFSET structure contains a physical offset into a volume and its accompanying physical disk number and is used with IOCTL_VOLUME_PHYSICAL_TO_LOGICAL and IOCTL_VOLUME_LOGICAL_TO_PHYSICAL to request a logical offset equivalent of a physical offset or a physical offset equivalent of a logical offset, respectively.

Syntax

typedef struct _VOLUME_PHYSICAL_OFFSET {
  ULONG    DiskNumber;
  LONGLONG Offset;
} VOLUME_PHYSICAL_OFFSET, *PVOLUME_PHYSICAL_OFFSET;

Members

DiskNumber

Contains the number of the physical disk.

Offset

Contains the physical offset in bytes of the data on the disk.

Requirements

Requirement Value
Header ntddvol.h (include Ntddvol.h)

See also

IOCTL_VOLUME_LOGICAL_TO_PHYSICAL

IOCTL_VOLUME_PHYSICAL_TO_LOGICAL