CN105702273A - Method for repairing front-good and back-bad fault of Hitachi hard disk - Google Patents
Method for repairing front-good and back-bad fault of Hitachi hard disk Download PDFInfo
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- CN105702273A CN105702273A CN201610108305.3A CN201610108305A CN105702273A CN 105702273 A CN105702273 A CN 105702273A CN 201610108305 A CN201610108305 A CN 201610108305A CN 105702273 A CN105702273 A CN 105702273A
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- hard disk
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1803—Error detection or correction; Testing, e.g. of drop-outs by redundancy in data representation
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- Memory System Of A Hierarchy Structure (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
The present invention discloses a method for repairing a front-good and back-bad fault of a Hitachi hard disk, belonging to the field of the hard disk data recovery. The method comprises: 01) obtaining a firmware area map module, and analyzing the buffer memory address of a P table; 02) reading the position where the P table with zero head is located, and jumping a bad channel and performing recording if there is provided a bad channel, reading the position where the P table with one head is located again, and jumping the bad channel and performing recording if there is provided the bad channel, and combining the read data of the zero head and the one head together to repair a whole P table; 03) reading and storing the content of the sector with the ram data length of 512; and 04) loading the whole P table repaired in the step 2 to the hard disk buffer memory, and building the correct compiler of the hard disk. The method for repairing a front-good and back-bad fault of a Hitachi hard disk is configured to combine a whole P table through adoption of the P table backup with zero head and the P table backup with one head of the hard disk and load the P table so as to realize the repairing of the front-good and back-bad fault of the Hitachi hard disk.
Description
Technical field
The present invention relates to hard disc data and recover field, particularly to a kind of repair before Hitachi's hard disk good after the method for bad fault。
Background technology
When bad track or damage occurs in the P table position in hard disk firmware district of Hitachi, it is impossible to when normally being accessed and load, the data field of Hitachi's hard disk just cannot normally be accessed, situation bad after good before namely there will be。The concrete form of expression is, the data of the previous section sector of data field, it is possible to normally access。The data of the higher value LBA position of data field, it is impossible to normally access。The appearance of this situation, bad fault after good before being called hard disk。Causing the reason of this fault, mainly the P table module in hard disk firmware district occurs in that bad track or damage, cannot normal load when causing hard disk self to load P table module so that hard disc data district cannot normally access。
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is provided that a kind of repair good before Hitachi's hard disk after the method for bad fault, it is achieved that the reparation of bad fault after good before Hitachi's hard disk。
For solving problem above, the technical solution used in the present invention is as follows: a kind of repair good before Hitachi's hard disk after the method for bad fault, comprise the following steps:
01 obtains firmware chorography module, and parses the buffer address of P table；The labelling PSHT of P table offset 12 bytes backward after the content of four byte records be the buffer address of P table, the content of four byte records after buffer address is the valid data length of P table；
The 02 P table position reading 0, if there being bad track just to skip bad track record；Read the P table position of 1 again, if there being bad track just to skip bad track record；Finally the data set that 0 and 1 is read is combined, repairs out a complete P table；
03 reads ram data length is the content of 512 sectors and saves as L；The value N of coupling " 4FF07042801A71F1030103D202484078012800D000207047 " form is searched in reading in ram data content after completing, the content of four byte records after matching value N is need the address value M of amendment, and M is saved as A4A3A2A1；Finally in L, it is displaced to OxA4A3A2A1, then read the content of two bytes and write the address of two bytes；
The complete P table that 02 repairs is loaded into hard disk cache by 04, makes hard disk set up correct compiler。
As preferably: if step 02 can not repair out a complete P table, then directly exit。
As preferably: after good before repairing Hitachi hard disk before bad fault, first judge Hitachi's hard disk get well before whether existing after bad fault。
As preferably: judge Hitachi's hard disk whether exist before good after the concrete grammar of bad fault as follows: directly access sector data；The position of LBA before, during and after access；If front-OK, in-OK, rear-NO, then be bad after front getting well, otherwise exit。
Beneficial effects of the present invention is as follows: present invention utilizes the P backup of the backup of the P table of hard disk 0 and 1 and has been reassembled into a complete P table, again through the loading to P table, and the reparation of bad fault after good before Hitachi's hard disk can be realized。
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearly understand, referring to embodiment, the present invention is described in further details。
A kind of repair good before Hitachi's hard disk after the method for bad fault, comprise the following steps:
01 obtains firmware chorography module, and parses the buffer address of P table；The labelling PSHT of P table offset 12 bytes backward after the content of four byte records be the buffer address of P table, the content of four byte records after buffer address is the valid data length of P table；
The 02 P table position reading 0, if there being bad track just to skip bad track record；Read the P table position of 1 again, if there being bad track just to skip bad track record；Finally the data set that 0 and 1 is read is combined, repairs out a complete P table；
03 reads ram data length is the content of 512 sectors and saves as L；The value N of coupling " 4FF07042801A71F1030103D202484078012800D000207047 " form is searched in reading in ram data content after completing, the content of four byte records after matching value N is need the address value M of amendment, and M is saved as A4A3A2A1；Finally in L, it is displaced to OxA4A3A2A1, then read the content of two bytes and write the address of two bytes；
The complete P table that 02 repairs is loaded into hard disk cache by 04, makes hard disk set up correct compiler。
Further: if step 02 can not repair out a complete P table, then directly exit。
Further: after good before repairing Hitachi hard disk before bad fault, first judge Hitachi's hard disk get well before whether existing after bad fault。
Further: judge Hitachi's hard disk whether exist before good after the concrete grammar of bad fault as follows: directly access sector data；The position of LBA before, during and after access；If front-OK, in-OK, rear-NO, then be bad after front getting well, otherwise exit。
Claims (4)
1. one kind repair good before Hitachi's hard disk after the method for bad fault, it is characterised in that comprise the following steps:
01 obtains firmware chorography module, and parses the buffer address of P table；The labelling PSHT of P table offset 12 bytes backward after the content of four byte records be the buffer address of P table, the content of four byte records after buffer address is the valid data length of P table；
The 02 P table position reading 0, if there being bad track just to skip bad track record；Read the P table position of 1 again, if there being bad track just to skip bad track record；Finally the data set that 0 and 1 is read is combined, repairs out a complete P table；
03 reads ram data length is the content of 512 sectors and saves as L；The value N of coupling " 4FF07042801A71F1030103D202484078012800D000207047 " form is searched in reading in ram data content after completing, the content of four byte records after matching value N is need the address value M of amendment, and M is saved as A4A3A2A1；Finally in L, it is displaced to OxA4A3A2A1, then read the content of two bytes and write the address of two bytes；
The complete P table that 02 repairs is loaded into hard disk cache by 04, makes hard disk set up correct compiler。
2. according to claim 1 a kind of repair good before Hitachi's hard disk after the method for bad fault, it is characterised in that if step 02 can not repair out a complete P table, then directly exit。
3. according to claim 1 a kind of repair good before Hitachi's hard disk after the method for bad fault, it is characterised in that after good before repairing Hitachi's hard disk before bad fault, first judge Hitachi's hard disk whether exist before well after bad fault。
4. according to claim 3 a kind of repair good before Hitachi's hard disk after the method for bad fault, it is characterised in that judge Hitachi's hard disk get well before whether existing after the concrete grammar of bad fault as follows: directly access sector data；The position of LBA before, during and after access；If front-OK, in-OK, rear-NO, then be bad after front getting well, otherwise exit。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610108305.3A CN105702273B (en) | 2016-02-29 | 2016-02-29 | The method of bad failure after being got well before a kind of reparation Hitachi hard disk |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610108305.3A CN105702273B (en) | 2016-02-29 | 2016-02-29 | The method of bad failure after being got well before a kind of reparation Hitachi hard disk |
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| CN105702273A true CN105702273A (en) | 2016-06-22 |
| CN105702273B CN105702273B (en) | 2018-07-03 |
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| CN201610108305.3A Active CN105702273B (en) | 2016-02-29 | 2016-02-29 | The method of bad failure after being got well before a kind of reparation Hitachi hard disk |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106648999A (en) * | 2016-12-28 | 2017-05-10 | 四川秘无痕信息安全技术有限责任公司 | Method for restoring damaged firmware module in A working area of Hitachi hardware |
| CN107797940A (en) * | 2017-11-21 | 2018-03-13 | 四川巧夺天工信息安全智能设备有限公司 | A kind of restoration methods for hard disc data area of Toshiba can not be accessed |
| CN111722950A (en) * | 2019-03-21 | 2020-09-29 | 武汉思托福科技有限公司 | Hard disk fault maintenance method |
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| CN104714869A (en) * | 2015-03-31 | 2015-06-17 | 四川效率源信息安全技术有限责任公司 | Method for repairing Western Digital hard disk unable to access data |
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| US20040062093A1 (en) * | 2002-10-01 | 2004-04-01 | Nec Corporation | Data writing apparatus, data writing/reading apparatus, data writing method and data writing/reading method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106648999A (en) * | 2016-12-28 | 2017-05-10 | 四川秘无痕信息安全技术有限责任公司 | Method for restoring damaged firmware module in A working area of Hitachi hardware |
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| CN107797940A (en) * | 2017-11-21 | 2018-03-13 | 四川巧夺天工信息安全智能设备有限公司 | A kind of restoration methods for hard disc data area of Toshiba can not be accessed |
| CN107797940B (en) * | 2017-11-21 | 2021-02-23 | 四川巧夺天工信息安全智能设备有限公司 | Recovery method for Toshiba hard disk data area incapable of being accessed |
| CN111722950A (en) * | 2019-03-21 | 2020-09-29 | 武汉思托福科技有限公司 | Hard disk fault maintenance method |
| CN111722950B (en) * | 2019-03-21 | 2023-08-25 | 武汉思托福科技有限公司 | Hard disk fault maintenance method |
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| Publication number | Publication date |
|---|---|
| CN105702273B (en) | 2018-07-03 |
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