*** GLOSSARY ***

     This  glossary  contains short explanations of terms used throughout
manuals. If you are familiar with these ones, you might want to skip it.

ATTRIBUTE
     when  volume  is formatted using NTFS, all properties of files are stored
as  "File  Attributes".  Even  the  contents  of  file are stored as a special
attribute  ($DATA).  This  allows  file system to treat all objects in uniform
manner.


BOOT SECTOR (BOOT RECORD)
     system  record  in  the  beginning  of a volume containing startup loader
program  and  some  important  disk  information,  e.g. FAT size and number of
sectors per cluster.

CLUSTER
     is a least possible allocation unit the operating system uses. It usually
consists of several disk sectors.

CLUSTER FACTOR (CF)
     number of 512-byte sectors per cluster. CF is always a power of two, i.e.
1, 2, 4, 8, 16, ..., 128

DIRECTORY
     is a system record storing the information about particular file on disk.
Most  significant  examples  include file name, file size and first cluster of
the file

DISK
     is a physical device attached to the system (e.g. "Quantum Fireball CR4.3"),

DISK IMAGE
     sector-by  sector  copy  of  either a physical disk or a volume stored in
file.

FAT (File Allocation Table)
     is  a  system  area storing the information about where files are located
and  about  free areas of disk. This data structure is of most importance when
it comes to data recovery. Other system structures are either not required for
recovery  or  can be reconstructed with minor effort, while FAT is necessary.
Two  copies of FAT are stored on disk in order to increase fault tolerance, so
once one is damaged, another (backup) copy can be used instead.

FILE RECORD SEGMENT (FRS)
     is  a  record in MFT on NTFS volume (see MFT). At least one FRS is stored
in MFT for each file or directory on volume.

INDEX (INDEX BLOCK)
     NTFS  stores directory contents in a special format (sometimes called "b+
tree").  This allows faster directory searches and sorting. INDEX contains all
b+  tree  records for a particular directory, and INDEX BLOCK (being a part of
index) contains part of the b+ tree structure.

LONG FILE NAME (LFN)
     Windows 9x/ME/NT extension to a FAT filesystem, which allows creating
file names exceeding MS-DOS "8.3" standard.

MASTER FILE TABLE (MFT)
     is  a  most  significant  system  structure on NTFS. It holds all records
about  files,  file  names  and  file contents. MFT is an array of FILE RECORD
SEGMENTS, each of them describing an uniquie file or directory.

MATCH FACTOR (M.F.) - see RELEVANCE

PARTITION TABLE (MASTER BOOT SECTOR, MASTER BOOT RECORD, MBR)
     is  a  system  record  storing information about volume layout, i.e. what
logical  volumes  are  stored  on  a  physical disk, about their locations and
sizes.

RELEVANCE
     characterizes  the  quality  of  some data (e.g. quality of the parameter
set).  It  is usually computed as (FoundObjects/ExpectedObjects)*100%. Greater
relevance values mean better quality.

SECTOR
     is  a  minimum  amount  of data disk can address and/or transfer during a
single operation. It is 512 bytes on PCs.

VOLUME or PARTITION
     is a logical volume (e.g. "C:", "D:") on a physical DISK