How to fix an error in the mft filesystem?

August 25, 2020 by Louie Sharp

 

Sometimes your system may display an error code pointing to the mft filesystem. This problem can be caused by a variety of reasons. The root table is a database that stores information about every file and directory on an NTFS (NT file system) volume. MFT has at least one entry for every file and directory on an NTFS logical volume.

 

 


What are the records in the MFT called?

Data Record 1: A mirrored MFT data record that is a copy of the first 16 data records from the MFT. Entry 2: Log file for NTFS volume \ ufffd \ ufffds. Entry 3: information about a volume partition, eg. B. Name, NTFS version, creation date and time. Entry 4: metadata about the attributes of NTFS files used on the volume.


The Master File Table is a database that stores information about each file and directory on an NTFS (NT File System) volume. MFT has at least one entry for every file and directory on an NTFS logical volume. In addition, each data record contains attributes that tell the operating system how to handle the file or directory assigned to the data record.

In most cases, information about a file or directory, such as type, size, creation date / time, last modified date / time, and author, is stored either in MFT records or outside the MFT, but described by MFT records.


What are the two main components of an MFT entry?

All information about a file, including its size, timestamps, permissions, and data content, is stored either in the MFT records or in an area outside the MFT that is described by the MFT records. The file allocation table consists of two parts: the file allocation table and the directory entries.


To see a complete list of MFT attributes, simply click Show in an open folder containing at least one file or subfolder, then select Select Parts. You can make the attributes visible by checking or unchecking the checkboxes in the left column of the popup.


mft file system

As files are added to the NTFS volume, new entries are added to the MFT, which means that the MFT is constantly expanding. When files are removed from an NTFS volume, their MFT entries can be reused. However, the space allocatedfor these records is not reallocated and the size of the MFT is not reduced.

The NTFS file system reserves storage space to keep the MFT as consistent as possible as it grows. The MFT zone area is the name of the space reserved by the NTFS file system for MFT on each volume.



In either case, MFT fragmentation begins when the MFT Reserved Area or unreserved hard disk space is fully allocated. When unreserved space is fully allocated, it is allocated to user files and directories in the MFT zone. When the MFT area is fully allocated, the space for new MFT entries is determined from the unreserved space.


What is the first field is an MFT entry signature?

The first field of each MFT record is the signature, and the standard record contains the ASCII string "FILE". If an error is found in the entry, it may have the string "BAAD". There is also a flag field that indicates if the entry is in use and is for a directory.


MFT can (and should) be defragmented. Before defragmenting a volume, it is recommended that you leave as much space as possible at the beginning of the MFT zone to minimize the risk that the MFT zone will be fully allocated before defragmentation is complete. You should always leave unallocated space outside the MFT zone in case the MFT zone is fully allocated before defragmentation is complete.



 

 

 

 

 

 

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