A Method of Modifying the Head Bitmap of Seagate Hard Disk

Abstract

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 a head bitmap of a Seagate hard disk. Background technique [0002] The data storage of the hard disk is through the reading and writing of the magnetic head to store data. Due to the accumulation of time and the influence of uncontrollable external factors, the magnetic head of the hard disk is easily damaged, and the hard disk platter may also be scratched. If a magnetic head is damaged or a certain platter is scratched, there is no way to read the data in the hard disk. [0003] Hard disk failures include abnormal noise, knocking, failure to seek, or even stalling, and failure to start up after powering on again. Usually encounter the above several situations, the prior art will adopt the method of replacing the matching magnetic head to deal with. However, we often encounter the problem that the hard disk cannot be repaired after replacin...

AI Technical Summary

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.