// ntddvol.h
typedef struct _VOLUME_LOGICAL_OFFSET {
LONGLONG LogicalOffset;
} VOLUME_LOGICAL_OFFSET, *PVOLUME_LOGICAL_OFFSET;
View the official Windows Driver Kit DDI referenceNo description available.
The VOLUME_LOGICAL_OFFSET structure contains a logical offset into a volume.
LogicalOffsetContains a logical offset in bytes into a volume.
The VOLUME_LOGICAL_OFFSET structure 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.
IOCTL_VOLUME_LOGICAL_TO_PHYSICAL
IOCTL_VOLUME_PHYSICAL_TO_LOGICAL