Method for modifying magnetic head bitmap of Xijie hard disk
A magnetic head and hard disk technology, applied in the field of information security, can solve problems such as scratches, head damage, and head mismatch, saving time and cost, high success rate, and preventing the disk from being damaged again.
Active Publication Date: 2016-02-10
XLY SALVATIONDATA TECHNOLOGY INC
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Problems solved by technology
However, we often encounter the problem that the hard disk cannot be repaired after replacing the magnetic head. The reason may be that the magnetic head does not match, or even if the magnetic head is matched, the hard disk cannot work normally due to scratches on a certain platter.
In other cases, even if a magnetic head is replaced, when the damaged disk is read, the newly replaced magnetic head will be damaged again.
Method used
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Embodiment Construction
[0042] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following examples are given to further describe the present invention in detail.
[0043] A method for modifying the bitmap of a Seagate hard disk head, including the following steps;
[0044] S1: Obtain the ROM information in the hard disk circuit board through BootCode;
[0045] S2: Analyze the SAP data body structure in ROM;
[0046] S3: Find the head bitmap information in the SAP data body;
[0047] S4: Modify the bitmap information of the magnetic head and turn off the damaged magnetic head;
[0048] S5: Verify and modify the SAP data body to generate a new SAP data body;
[0049] S6: Backfill the SAP data body that has been validated in S5 into ROM;
[0050] S7: Write the modified ROM back to the hard disk circuit board through BootCode.
[0051] The detailed steps of S2 are as follows:
[0052] S201: Find the storage location of the SAP data in the ROM data body; there are...
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The present invention discloses a method for modifying a magnetic head bitmap of a Xijie hard disk. The method comprises the following steps: S1: acquiring ROM information; S2: parsing an SAP data volume structure; S3: finding a magnetic head bitmap data volume in an SAP; S4: turning off a damaged magnetic head; S5: checking and modifying the SAP data volume; S6: backfilling the checked SAP data volume to a ROM; and S7: by means of a Root Code, writing the ROM back into a circuit board of the hard disk. The method provided by the present invention has the following advantageous effects: 1. the damaged magnetic head is forbidden from working in a manner of shielding a magnetic head, so as to avoid damaging the disk again; 2. the magnetic head does not need replacing and matching so as to save time and cost; 3. a success rate of repairing the hard disk is higher; 4. a hard disk with lots of scratches can be processed; and 5. in the case of not changing the magnetic head, data from other good disk surfaces can be extracted as much as possible.
Description
Technical field [0001] The invention relates to the technical field of information security, in particular to a method for modifying the bitmap of a Seagate hard disk head. Background technique [0002] Hard disk data storage is through the reading and writing of magnetic heads to store data. Due to the accumulation of time and uncontrollable external factors, the magnetic head of the hard disk is easily damaged, and the hard disk platters may also be scratched. If a head is damaged or a disc is scratched, there is no way to read the data in the hard disk. [0003] Hard disk failures include abnormal noise, knocking, unable to seek, even stalling, unable to start spinning when power on again, etc. Usually, when the above situations are encountered, the prior art will adopt the method of replacing the matching magnetic head to deal with it. However, we often encounter the problem that the hard disk still cannot be repaired after replacing the head. The reason may be that the heads...
Claims
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IPC IPC(8): G11B5/54G11B5/40G11B23/50
Inventor 梁效宁董超张佳强
Owner XLY SALVATIONDATA TECHNOLOGY INC