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A method for erasing data in the used firmware area of ​​a western digital hard disk

A Western Digital hard disk, data erasure technology, applied in the field of hard disk data erasure, can solve the problems of inoperable hard disk firmware area and hidden shielding area, etc., achieve reliable data erasure, convenient and fast data erasure, erasure method simple and effective effect

Active Publication Date: 2022-04-05
INST OF FORENSIC SCI OF MIN OF PUBLIC SECURITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The erasing machine on the existing market interacts with the Western Digital hard disk using the ATA protocol standard instruction set, and the standard instruction set cannot operate the hard disk firmware area and the hidden shielding area
The standard instruction set of the ATA protocol can only read and write the user data area. For example, a 500GB Western Digital hard disk is recognized in the motherboard BIOS as 500G, so the existing erasing machine can only erase the partitions and partitions in the 500G space. Various data files, underlying code

Method used

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  • A method for erasing data in the used firmware area of ​​a western digital hard disk
  • A method for erasing data in the used firmware area of ​​a western digital hard disk
  • A method for erasing data in the used firmware area of ​​a western digital hard disk

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Embodiment Construction

[0046] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0047] The present invention first introduces the data distribution and description of the Western Digital mechanical hard disk.

[0048] 1. Hard disk partition

[0049] There are 11 places where there are data on the WD hard drive, namely: user data area, reserved area, used firmware area, unused firmware area, permanent defect table shielding area, growth defect table shielding area, firmware area defect table shielding area , segment mask area, unused disk mask area, NVRAM data area, and solid-state cache area. These 11 places are all readable and writable. However, the existing erasing machines on the market can only erase the user data area, and the data in the other 10 places cannot be erased. However, the present invention confirms through experiments that the data in other 10 locations can be erased with the factory-defined instruction set....

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Abstract

The invention relates to a method for erasing data in the used firmware area of ​​a Western Digital hard disk, which is characterized in that it comprises the following steps: 1) when erasing the used firmware area of ​​a Western Digital hard disk, the ATA standard protocol instruction set and hard disk factory custom instructions 2) When erasing a Western Digital hard drive with a reserved area, first restore the disk capacity, and then use standard APIs to overwrite and write data to the reserved area sector by sector , to achieve erasure. The invention adopts the factory-defined instruction set and the ATA standard protocol instruction set to realize the data erasure of the used firmware area of ​​the Western Digital hard disk. The erasing method is simple and effective, and can be widely used in the field of data erasure of hard disk data.

Description

technical field [0001] The invention relates to a method for erasing data on a hard disk, in particular to a method for erasing data in a used firmware area of ​​a Western Digital hard disk. Background technique [0002] Since the virus is written into the hard disk firmware area and embedded in the hard disk firmware program, when the hard disk is powered on, the hard disk firmware program will automatically activate the virus and release the virus to the user area (the user area is the computer operation area). area accessible by the system). After the hard disk self-inspection is completed, the host computer can recognize the hard disk, and then the operating system can start, and the virus will automatically run when the operating system is started. These viruses can copy sensitive data to the firmware area of ​​the hard disk, and then transmit it to the virus when the time is ripe. author. [0003] Even if the virus in the user area is found to be killed and cleared, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06G06F12/02
Inventor 赵露康艳荣邢桂东郭丽莉周冬林鲍梦湖
Owner INST OF FORENSIC SCI OF MIN OF PUBLIC SECURITY
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