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Fast reverse search restructuring and recovery method of hard disk partition table

A technology of hard disk partition and recovery method, which is applied in the direction of responding to the occurrence of errors, redundant data in calculations, etc., can solve problems such as low efficiency, and achieve fast recovery speed, simple operation, and high recovery success rate Effect

Active Publication Date: 2010-06-30
江苏航天龙梦信息技术有限公司
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As a result, this approach appears increasingly inefficient

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  • Fast reverse search restructuring and recovery method of hard disk partition table
  • Fast reverse search restructuring and recovery method of hard disk partition table
  • Fast reverse search restructuring and recovery method of hard disk partition table

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0025] (1) Hard disk partition chain structure

[0026] 0x01BEH~0x01FDH in the MBR sector of the hard disk is the partition table, with a total of 64 bytes, which can store 4 partition table entries, and each partition table entry consists of 16 bytes. Hard disk partitions under the Windows operating system can be divided into primary partitions and extended partitions. A primary partition occupies one partition table entry. Although an extended partition can be divided into multiple logical drives, an extended partition only occupies one partition table entry. . The extended partition table entry will point to the actual address of the extended partition table. The extended partition table contains two partition table entries. The first partition table entry points to the logical partition start address of this extended partition, and the second partition table ...

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Abstract

The invention discloses a fast reverse search restructuring and recovery method of a hard disk partition table. A destroyed main partition table is restored by adopting an NTFS partition table chain reverse search restructuring algorithm based on a back-up DBR, therefore, the data recovery of a hard disk is realized. The method comprises two processes of partitional and reverse scanning of an NTFS system and main partition table restructuring. The invention has fast recovery speed, simple operation and high recovery success ratio, and realizes the restructuring and the recovery of the whole main partition table.

Description

technical field [0001] The invention relates to a fast reverse search recombination and recovery method for a hard disk partition table after NTFS partition is damaged. Background technique [0002] The existing hard disk partition table recovery technology uses technical methods such as manual editing, backup and restoration, or forward hard disk traversal, which have the disadvantages of complex operation, error-prone, low versatility, low recovery success rate, and long operation time. [0003] Partition table data recovery is currently mainly handled in the following ways: (1) Use a disk editor for manual editing. (2) Back up the partition table of the hard disk in advance. When the hard disk partition is damaged, restore it through the partition table backed up in advance. (3) By traversing each sector of the hard disk, query the location of each logical partition or the location of the extended partition table. [0004] Disadvantages of existing methods: [0005] Me...

Claims

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Application Information

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IPC IPC(8): G06F11/14
Inventor 乐德广俞斌常晋义
Owner 江苏航天龙梦信息技术有限公司
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