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Method for repairing P table of Seagate hard disk

A technology of hard disk and table data, applied in the field of information security, can solve the problems of hard disk identification, compiler abnormality, and unsuccessful compiler recovery, etc., to shorten the time, reduce the probability of errors, and improve the success rate.

Inactive Publication Date: 2016-02-24
XLY SALVATIONDATA TECHNOLOGY INC
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  • Abstract
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  • Claims
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Problems solved by technology

Such a normal entry can ensure the normal operation of the compiler, otherwise the compiler will be abnormal, ranging from being unable to access the data area correctly, or severely, the hard disk cannot be recognized by the motherboard BIOS
[0003] At present, the restoration of the hard disk in the prior art is mainly to directly restore the compiler on the hard disk, but if the P table entry is abnormal, the restoration of the compiler will fail

Method used

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  • Method for repairing P table of Seagate hard disk
  • Method for repairing P table of Seagate hard disk
  • Method for repairing P table of Seagate hard disk

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the following examples are given to further describe the present invention in detail.

[0021] S101: read the system file corresponding to the P table through the serial port, and the P table is in the position corresponding to the head 0 of the hard disk, the volume 3, and the file descriptor;

[0022] S102: Analyzing the effective data body of the P list, and distinguishing abnormal entries;

[0023] S103: Clear all abnormal entries;

[0024] S104: Starting from the offset position of the effective data body in the P table, take 14 bytes as a group, first sum the two groups of bytes, and then calculate the modulus; loop until the end of the effective data body in the P table, and calculate the The result is written to the last 2 bytes of the P list to overwrite;

[0025] The specific algorithm is as follows:

[0026]

[0027]

[0028] S105: rebuilding the compiler...

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Abstract

The present invention discloses a method for repairing a P table of a Seagate hard disk. The method comprises the following steps: S101, reading a system file corresponding to a P table; S102, analyzing an effective data volume of the P table, and distinguishing abnormal entries; S103, removing the abnormal entries; S104, calculating an effect and writing the effect into the last two bytes of the P table; and S105, carrying out compiler reconstruction on the re-modified P table. The method has the following beneficial benefits that the abnormal defect entries of the P table can be directly modified, and the P table effect after modification can be calculated, so that the error probability of hard disk repair is reduced, time of hard disk repair is shortened, and the success rate of hard disk repair is improved.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a method for repairing the P list of a Seagate hard disk. Background technique [0002] The P list of Seagate hard disk is one of the most important firmware modules in Seagate hard disk firmware. For a Seagate hard disk to correctly access the data area, the hard disk's P-list and non-resident G-list must be guaranteed to be normal entries, and there are no redundant entries added from the outside. Such a normal entry can ensure the normal operation of the compiler, otherwise the compiler will be abnormal, ranging from being unable to access the data area correctly, to severely affecting the hard disk being unable to be recognized by the motherboard BIOS. [0003] At present, the restoration of the hard disk in the prior art is mainly to directly restore the compiler on the hard disk, but if the entry in the P table is abnormal, the restoration of the compiler will...

Claims

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Application Information

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IPC IPC(8): G06F11/07
CPCG06F11/0793
Inventor 梁效宁董超赵飞
Owner XLY SALVATIONDATA TECHNOLOGY INC
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