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FAT (file allocation table) file system formatting method and device

A file system and format technology, applied in the field of information processing, can solve the problems of data loss and reduce the reliability of data storage, and achieve the effect of improving reliability

Inactive Publication Date: 2011-07-06
BEIJING HUAWEI DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the FAT area and the FDT area are the data indexes of the FAT file system, deleting the FAT area and the FDT area will cause all the data of the FAT file system stored in the storage medium to be lost, thereby reducing the reliability of data storage

Method used

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  • FAT (file allocation table) file system formatting method and device
  • FAT (file allocation table) file system formatting method and device
  • FAT (file allocation table) file system formatting method and device

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] figure 2 A schematic flow chart of the FAT file system formatting method provided by Embodiment 1 of the present invention, as figure 2 As shown, the FAT file system formatting method of the present embodiment may include the following steps:

[0023] Step 201, obtaining a formatting instruction for formatting the FAT file system into a...

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PUM

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Abstract

The embodiment of the invention provides an FAT file system formatting method and device. The method comprises: acquiring a formatting instruction for formatting an FAT file system to an FAT format; acquiring first sector information corresponding to an MBR (main boot record) region, second sector information corresponding to a DBR (dos boot record) region, third sector information corresponding to an FAT region, fourth sector information corresponding an FDT (file directory table) region, and fifth sector information corresponding to a DATA region according to the corresponding relationship between the regions of the storage medium and the sector information; and formatting the sectors marked by the first sector information and the second sector information, and not formatting the sectors marked by the third sector information, the fourth sector information and the fifth sector information.

Description

technical field [0001] Embodiments of the present invention relate to information processing technologies, and in particular to a method and device for formatting a File Allocation Table (FAT) file system. Background technique [0002] figure 1 It is a schematic diagram of the storage structure of the file allocation table (File Allocation Table, referred to as FAT) file system, such as figure 1 As shown, the data (DATA) area is used to store the data of the FAT file system, and the data unit is a cluster; the file directory table (File Directory Table, referred to as FDT) area is also called the ROOT area, here specifically refers to the root directory, which is the DATA area The directory of the data of the stored FAT file system, which contains the file name, file length, change date, file start cluster, etc. of the data of the FAT file system in this directory; the FAT area is used to store the linked list of all clusters of the FAT file system, indicating The data of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 冯春柏
Owner BEIJING HUAWEI DIGITAL TECH
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