Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » M »

MFT - Master File Table

Short for Master File Table, a file that contains information in the form of 1024-byte records about every other file and directory in an NTFS volume (i.e., it is essentially a table of metadata). The data stored in the MFT is what the operating systemneeds to retrieve the files. For example, it contains file permissions, the name and size of the file, the date and time it was created and the date and time it was modified.

NTFS reserves the first 16 records in the MFT for special metadata files, listed below:

  • Record 0: metadata about the MFT itself.
  • Record 1: the MFT mirror record, which is a copy of the first 16 records of the MFT
  • Record 2: the NTFS volume��s logging file
  • Record 3: volume partitioninformation, such as its name, NTFS version and creation date and time
  • Record 4: metadata regarding the NTFS file attributes used on the volume
  • Record 5: a pointer to the volume��s root directory
  • Record 6: a map displaying which clusterson the volume are available for use
  • Record 7: a copy of the volume boot code
  • Record 8: a list of all the volume��s clusters that have been marked as unusable because of detected errors
  • Record 9: a table of disk quotas for NTFS 5.0 or later
  • Record 10: information for converting files to Unicode
  • Records 11-15: reserved for future metadata

The 17th record and those following it contain information for each file and directory on the NTFS volume in order to prevent excessive disk fragmentation as file on the NTFS are added, causing the MFT to grow.







TECH RESOURCES FROM OUR PARTNERS
DID YOU KNOW?
11 Tips to Boost Your Wi-Fi Signal

It's not just your lawnmower and household tools that your neighbor won't return. Our top picks include everything from updating device firmware... Read More »

Interesting Times: Transformation in the IT Channel

Business transformation will remain the buzzword of the moment as channel firms continue to assess the direction of their companies in the age of... Read More »

What is a Virtual Private network (VPN)?

Companies and organizations will use a VPN to communicate confidentially over a public network and to send voice, video or data. Read More »

QUICK REFERENCE
29 Free Android Apps for Cash-Strapped Students

From wacky alarm clocks to lecture hall tools and after class entertainment, these Android apps are a good fit for a student's life and budget. Read More »

Network Fundamentals Study Guide

A network is a group of two or more computer systems or devices, linked together to share resources, exchange files and electronic communications.... Read More »

Computer Architecture Study Guide

This Webopedia  study guide describes the different parts of a computer system and their relations. Read More »