CN104821176B

CN104821176B - A kind of method for repairing Seagate hard disc magnetic head failure

Info

Publication number: CN104821176B
Application number: CN201510202388.8A
Authority: CN
Inventors: 梁效宁; 董超; 张佳强
Original assignee: SICHUAN XLY INFORMATION SAFETY TECHNOLOGY Co Ltd
Current assignee: SICHUAN XLY INFORMATION SAFETY TECHNOLOGY Co Ltd
Priority date: 2015-04-27
Filing date: 2015-04-27
Publication date: 2017-11-10
Anticipated expiration: 2035-04-27
Also published as: CN104821176A

Abstract

The invention discloses a kind of method for repairing Seagate hard disc magnetic head failure, comprise the following steps：S1：Select disk all consistent with faulty disk Model, SN front threes, firmware version number in normal hard disk and be then used as matching disc；S2：The magnetic head bias ratio of matching disc and faulty disk is found, finds magnetic head bias ratio closest to the matching disc of faulty disk；S3：Recombinate and replace the magnetic head parameter in faulty disk ROM.The present invention can not be adapted to after solving the problems, such as hard disk replacement magnetic head；By screening twice, the matching disc closest to faulty disk is fast and accurately found, prevents the situation that matching disc data are incompatible in adaptation procedure；It can find and recombinate SAP data, repair hard disk success rate height and reduce repair time.

Description

A kind of method for repairing Seagate hard disc magnetic head failure

Technical field

The present invention relates to field of information security technology, more particularly to a kind of method for repairing Seagate hard disc magnetic head failure.

Background technology

Hard disk is to deposit data by the read-write of magnetic head, because hard disk usage time is long and the not shadow of specific factor Ring, hard disk is shaken such as during hard disk operational can all be such that the magnetic head of hard disk damage, cause hard disk ATA state grow always it is busy or Necrosis, at this moment hard disk just has no idea to read the data in hard disk, and occurs not seeking, striking disk, abnormal sound, even can not Act phenomena such as turning.

At present, the method for Seagate hard disc magnetic head failure is repaired mainly by the way of magnetic head is changed, but changes magnetic head Easily occur magnetic head and the unmatched situation of disk body afterwards, at this moment hard disk can not normal work.

The content of the invention

The defects of present invention is directed to prior art, proposes a kind of method for repairing Seagate hard disc magnetic head failure, and its feature exists In comprising the following steps：

S1：Disk all consistent with faulty disk Model, SN front threes, firmware version number in normal hard disk is selected then to make For matching disc；

S2：The magnetic head bias ratio of matching disc and faulty disk is found, finds matching of the magnetic head bias ratio closest to faulty disk Disk；

S3：Recombinate and replace the SAP magnetic head parameters in faulty disk ROM.

Preferably, the detailed step of the S2 is as follows：

S201：Matching disc and faulty disk is set all to enter T level patterns by instruction, subsequently into 2 grades of instruction modes；

S202：Obtain the magnetic head bias ratio of matching disc and faulty disk；

S203：The magnetic head bias ratio of matching disc and faulty disk is contrasted, finds the matching disc closest to faulty disk as final The matching disc needed, eliminate other matching discs.

Preferably, the detailed step of the S3 is as follows：

S301：Read the ROM data of matching disc and faulty disk；

S302：Find the storage location of the SAP data in ROM data body；

S303：The size of SAP data volumes is calculated, and is extracted；

S304：8 bytes before and after SAP data volumes are removed；

S305：SAP data volumes are divided into 5 data segments；

S306：The relevant position of second data segment of matching disc and the 4th data segment Write fault disk SAP data volumes is replaced Change legacy data；

S307：Original SAP data volumes are replaced in the ROM that the new SAP data volumes Write fault disk completed will be replaced.

Preferably, the data volume segmented mode in the S305 is as follows：

First data segment is：“0~4B”；

Second data segment is：“4C~2CD”；

3rd data segment is：“2CE~2FC”；

4th data segment is：“2FD~32C”；

5th data segment is：" 32D ~ afterbody ".

Compared with prior art the advantage of the invention is that：It can not be adapted to after solving the problems, such as hard disk replacement magnetic head；It is logical Screened after twice, fast and accurately find the matching disc closest to faulty disk, prevent that matching disc data are not simultaneous in adaptation procedure The situation of appearance；It can find and recombinate SAP data, repair process will not destroy the data of hard-disc storage, repair hard disk success rate Height simultaneously reduces reparation the spent time.

Brief description of the drawings

Fig. 1 is the main flow chart of the embodiment of the present invention；

Fig. 2 is step S2 of the present invention detail flowchart；

Fig. 3 is step S3 of the present invention detail flowchart.

Embodiment

In order to describe the embodiment of the present invention in detail, illustrate below in conjunction with the accompanying drawings：

A kind of as shown in figure 1, method for repairing Seagate hard disc magnetic head failure, it is characterised in that comprise the following steps：

Here by checking, label model must be consistent outside hard disk.

By checking, label SN front threes must be consistent outside hard disk：SN first represents manufacturing location (W=Wuxi, S =Suzhou, Z=Thailand)；SN seconds represent disk types（Disk types/density（1=1TB/platter, 2= 500GB/platter））；The 3rd expression magnetic head number of SN（The magnetic head of E=4, the magnetic head of F=6, the magnetic head of D=2）；

Pass through label firmware version number outside hard disk（FW）Must be consistent.

As shown in Fig. 2 the detailed step of the S2 is as follows：

S202：Obtain the magnetic head bias ratio of matching disc and faulty disk；

As shown in figure 3, the detailed step of the S3 is as follows：

S301：Read the ROM data of matching disc and faulty disk；

It should be noted that mentioned below, " XX XX XX " are variable value；

S302：The storage location of the SAP data in ROM data body is found, finding SAP storage address here there are two kinds of sides Formula, the first is：ROM heads are looked for so that using 4 bytes as one group, finding SAP features, " 05 XX XX XX ", the value are SAP numbers According to the head bias feature of body, redirect and can obtain SAP data volume head positions.

It is for second：Retrieved in ROM heads using 4 bytes as one group, find SAP base address offsets feature " 24 XX XX XX ", directly retrieved backward for one group with 4 after being redirected by this feature and find SAP features " 05 XX XX XX ".

Such as：SAP base address is characterized as " 24 00 00 10 ", then " 0x10000 " is exactly SAP base address offset features, " 05 86 68 00 " are retrieved backward using 4 bytes as one group after redirecting,

It is " 0x18668 " to obtain SAP data volume head bias position by " 0x10000 "+" 0x6886 "=" 0x18668 ".

S303：The size of SAP data volumes is calculated, and is extracted；It oneself is one group that the computational methods of the size, which are 4, SAP The value that rear three bytes of one group of data after feature subtract three bytes after SAP features is equal to SAP data volume sizes.Such as SAP is characterized as that " 05 00 00 07 " are followed by RAP features " 06 00 50 07 ", then by " 0x07500 "- " 0x07000 " obtains SAP data volume sizes.