// ntddvol.h

typedef struct _VOLUME_PHYSICAL_OFFSET {
  ULONG    DiskNumber;
  LONGLONG Offset;
} VOLUME_PHYSICAL_OFFSET, *PVOLUME_PHYSICAL_OFFSET;
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Windows Driver Kit DDI reference (ns-ntddvol-_volume_physical_offset)

_VOLUME_PHYSICAL_OFFSET structure

Description

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.

Members

`DiskNumber`

Contains the number of the physical disk.

`Offset`

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

VOLUME_PHYSICAL_OFFSET - NtDoc