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Maintenance and repair of HDD hard drives. Hard Drive Repair Tool: Windows Tools and Third Party Applications Maintenance and Repair of HDD Hard Drives

Keyboard and mouse cleaning

Cleaning connector pins

Putting the chips in place

Cleaning

System backup

Active preventive maintenance methods

One of the main steps in preventive maintenance is backup systems. This operation allows you to restore system performance in the event of a fatal hardware failure. For backup, you need to purchase a high-capacity storage device.

One of the most important elements of preventive maintenance is regular and thorough cleaning. Dust that settles inside a computer can cause many troubles.

Firstly, it is a heat insulator, which impairs the cooling of the system.

Secondly, dust necessarily contains conductive particles, which can lead to leakage and even short circuits between electrical circuits.

Finally, some substances contained in the dust can accelerate the oxidation process of contacts, which will eventually lead to electrical connection failures.

In preventive maintenance, it is very important to eliminate the effects of thermal displacement of microcircuits. Since the computer heats up and cools down when you turn it on and off (hence, its components expand and contract), the chips installed in the sockets gradually "creep out" of them. Therefore, you will have to find all the components installed in the sockets and put them in place.

It is necessary to wipe the contacts of the connectors so that the connections between the nodes and components of the system are reliable. You should pay attention to the connectors for expansion, power supply, keyboard and speaker connections located on system board. As for the adapter boards, they need to wipe the printed connectors inserted into the slots on the system board, and all other connectors (for example, installed on the outer panel of the adapter).

The keyboard and mouse seem to be designed to suck in dust and dirt. If you ever open an old keyboard, you will be amazed by its resemblance to a trash can.

Therefore, I advise you to periodically clean the keyboard with a vacuum cleaner.

To ensure data security and improve efficiency work hard disc, it is necessary to perform some maintenance procedures from time to time. There are also several simple programs, with which you can to some extent insure yourself against data loss. These programs create backup copies (and restore them if necessary) of those critical zones hard drive, which, if damaged, makes it impossible to access files.

Ministry of Education and Youth Policy

AU ChR SPO "Cheboksary Engineering College"

course project

By discipline: Technical maintenance of computer equipment and computer networks

Subject: Maintenance and hard repair HDD drives

Explanatory note

KP.230106.007.282.000.P3

Completed by a student of group 4VT1

Ivanov Anatoly Igorevich

Checked:

Lecturer: Monakov A.A.

Cheboksary 2011-2012 academic year

INTRODUCTION

An important element modern computer is a hard disk - "winchester", HDD. Outwardly, this is a relatively small box, inside which there is not one, but a whole stack of disks coated with a magnetic layer. To read and write information, each disk in this stack is supplied with a magnetic head. The rotation of the disks and the movement of the magnetic heads is provided by electric motors and control electronic circuits.

A hard disk drive or HDD (eng. hard (magnetic) diskdrive, HDD, HMDD), a hard disk, in computer slang "hard drive" - a random access storage device (information storage device) based on the principle of magnetic recording. It is the main storage medium in most computers.

Unlike a "flexible" disk (floppy disk), information in a hard disk drive is recorded on hard (aluminum or glass) plates coated with a layer of ferromagnetic material, most often chromium dioxide - magnetic disks. The HDD uses one or more platters on the same axis. Reading heads in the operating mode do not touch the surface of the plates due to the layer of air flow formed near the surface during rapid rotation. The distance between the head and the disk is several nanometers (in modern disks, about 10 nm), and the absence of mechanical contact ensures a long service life of the device. In the absence of rotation of the disks, the heads are located at the spindle or outside the disk in a safe zone, where their abnormal contact with the surface of the disks is excluded.

Fig.1. HDD

Also, unlike a floppy disk, the storage medium is combined with a drive, a drive and an electronics unit and (in most cases in personal computers) is usually installed inside the computer's system unit.

Manufacturers

Majority hard drives make certain sounds before they malfunction, but these sounds will be different for hard drives from different companies. Data recovery company Data Cent has created a database of sounds to help you identify what's wrong with your hard drive. And if you hear that your hard drive is making strange noises, then perhaps its life is coming to an end and you will have to think about backing up your data.

With this set of sounds, you may be able to diagnose the operation of a hard drive and provide for it. possible failure to save all the information you need. The main brands of hard drives for which Data Cent has recorded crash sounds are western digital, Seagate, Maxtor, as well as several other brands.

Everything hard drives eventually fail. At the same time, you can hear various strange noises but in most cases, no. Some failures may be partial or temporary and related to the fact that some bits in the exchange of information with the OS have not yet been updated. IME is one of the most common causes of errors Windows boot, not a physical HDD failure. But for some reason most people buy a new hard one.

There are many programs for diagnosing both the hard surface, its heads, and the electronics itself. Also, these programs can read SMART statistics from your hard drive and determine how many failures were observed during the operation of the hard drive and thereby predict its condition (in some cases, it is possible to predict the service life).

Most reliable way storage important information- simultaneously on several media (backup). If one media fails and you have backup copy important data, then you are not afraid of any hardware failures.

external HDs

Rice. 2 External hard drive

Hard drives have become external relatively recently. For about a decade, hard drives have existed as external storage devices. The first devices were not in any demand, so they practically did not reach the regions of our country. This was due to the use of enough slow port data transfer, - a parallel interface, which, in addition, did not support the Plug & Play mode of operation. The first such devices had a rather "terrible" appearance and were bulky, as manufacturers tried to use cheaper 3.5-inch hard drives as their basis. Not all devices worked stably with all types of equipment, much depended on the "quality factor" of the driver supplied with the device.

Today, external hard drives are a mass product that almost every user has. External hard drives are used both for storing valuable data and for transferring information between computers. The global spread of USB ports in car radios, portable players, multimedia stations has greatly expanded the scope of external hard drives.

Modern external hard drives are most often based on 2.5-inch devices, have various controller variations that support one USB 2.0 port or support modern e-SATA / USB 3.0 ports. Each user can decide for himself which set of ports he needs in each specific case. USB 2.0 devices are the most popular. We have previously tested external hard WD My Book drive with USB 3.0 port support. This device did not claim the title mobile device and more in line with the concept of an external desktop product.

In today's review, your attention will be presented to the Western Digital My Passport Essential 500 GB external hard drive, which has a USB 2.0 port controller, which is available in almost every computer released in the last decade.

Western Digital has solid experience in the production of external hard drives. The history of the production of My Passport external hard drives goes almost from the moment of the creation of Western Digital Scorpio mobile hard drives. Under the plastic cases of the first models, hard drives with IDE interfaces were hidden, which today are outdated and obsolete solutions, so all new devices are equipped with 2.5 Western Digital Scorpio hard drives with a SATA interface. Under the plastic case of modern external hard drives, there is either an IDE (PATA) -USB 2.0 or SATA-USB 2.0 controller, which is a bridge between these two data transfer standards.

Along with the growth in the volume of mobile hard drives, the volume of My Passport external hard drives is also growing. The first external hard drives had a maximum capacity of 80 GB, and today's review includes a device with a capacity of 500 GB. The maximum volume of devices in this WD series is 640 GB, which is a figure that we could not even dream of in the segment of external 2.5-inch drives a couple of years ago.

1. ANALYTICAL PART

1.1 Purpose of the device or device

HDD otherwise, a hard drive or hdd (HardDiskDrive) is an accessory for permanent storage of information. Unlike random access memory, information is stored on it even in power off mode. The purpose of a hard drive is to store and reproduce this information.

Modern hard drives are characterized by the following parameters:

volume (the more - the better), as a rule, is measured in Gigabytes, although a transition to Terabytes is expected in the near future;

rotation speed (measured in number per second), the average value is 7200. The maximum hdd reaches rotation speeds of more than 15,000 rpm.

Depending on their purpose, hard drives are ordinary (designed for stationary work in system blocks or laptops) and removable (for transferring and copying large amounts of information). The purpose of a removable hard drive is the same as that of a flash drive, but it can also be used as a stationary one, including a system one.

1.2 Specifications

The main characteristics of a hard drive are capacity and speed.

Interface - a set of communication lines, signals sent over these lines, technical means supporting these lines, and the rules (protocol) of the exchange. Modern commercially available internal hard drives can use ATA (aka IDE and PATA), SATA, eSATA, SCSI, SAS, FireWire, SDIO, and FibreChannel interfaces.

Capacity - the amount of data that can be stored on the drive. Since the creation of the first hard drives, as a result of continuous improvement in data recording technology, their maximum possible capacity has been continuously increasing. The capacity of modern hard drives (with a 3.5-inch form factor) is

September 2011 reaches 4000 GB (4 Terabytes) and is close to 5 TB. In contrast to the system of prefixes adopted in computer science, denoting a multiple of 1024 (see: binary prefixes), manufacturers use values that are multiples of 1000 when designating the capacity of hard drives.

Today, almost everyone in the house has a personal computer. This thing is convenient, practical and extremely necessary in modern realities. But behind all the clear advantages, there are a number of disadvantages that users face almost every day.

If a brand new computer works like clockwork and pleases its owner, then over time the hard drive accumulates a lot of unnecessary information that interferes with the normal operation of the entire system. Moreover, the latter, like Plyushkin, collects everything that comes to hand, believing that she cannot do without the data collected in the bins.

Therefore, the hard drive needs to be cleaned of the accumulated "garbage", as well as the registry operating system. This will not only return the former performance, but also get rid of the mass of unnecessary data that takes up extra volumes, that is, we simply free up space on the hard drive.

The solution to this problem is the built-in maintenance programs and special Windows services. But since these same services are "in collusion" with the system, the cleaning takes place only superficially and the effectiveness of this procedure is reduced to almost zero. Alternatively, you can (and should) use third party applications.

Third Party Utilities

Magnetic disk maintenance programs include special utilities, which have access to platform system files and the registry. There are a lot of similar software on the Internet. Some will really conscientiously clean the disk and system, others will help only partially, well, others are completely useless and look more like pests than adequate software.

There are a lot of examples of programs for servicing a hard disk, but it is very difficult for an ordinary user, as well as a beginner, to navigate in all this diversity. In addition, some applications, especially from unverified sources, contain malicious code. By installing such software, you will do more harm to your computer than benefit.

Whatever disk maintenance programs you take, they all promise enviable efficiency and impeccable results. We will try, as they say, to separate the wheat from the chaff and designate really smart applications that will clean the disk properly and put the registry in order.

So, we present to your attention a list of programs for servicing disks on Windows, distinguished by their quality component and the efficiency of their work. All the software described below is distributed free of charge, but in some cases with limited functionality.

"Computer Accelerator"

This software is a prime example of a disk maintenance program as it should be. If you put it on a par with other analogues, then it stands out for its effectiveness against the general background.

The utility will very carefully clean your hard drive from excess garbage, go through the entire registry and thereby increase overall performance personal computer. This program disk maintenance optimizes all available software, will defragment the hard drive and restore the platform to working capacity.

Software features

It should also be noted the high speed of the application. If other utilities make the user wait for more than a dozen minutes, and sometimes several hours (in difficult cases), then Computer Accelerator will check your system in just a couple of minutes, draw conclusions, start and finish work, and provide you with a detailed report.

The developer of this disk maintenance program for a computer treats his brainchild with care, constantly updating and improving it. Some new functionality, more practical tools and other useful "chips" are being added.

Such disk maintenance programs are full-fledged complexes where the user does not need to look for any additional applications to maintain drives and troubleshoot operating system issues. The only thing worth clarifying is that all the features of the utility are available only in the professional version, that is, the purchased one. The developer provides a trial license for 30 days, but after it expires, the functionality will become noticeably poorer.

Advanced System Care

One more good example programs for servicing discs with a quality component. The utility will put your hard drive and the data on it in full order, and at the same time clean the system registry from unnecessary trash. After running the program and optimizing the platform, the performance of the computer increases markedly.

Disk Maintenance Programs Advanced System Care Worked great in the Windows environment. If you believe the statements of the developers, then after running your hard drive and the entire system through this software, the computer performance will increase by as much as 400%. The figure, of course, is unrealistic and the actual increase, judging by user reviews, ranges from 30 to 70 percent. But even such an indicator is quite good for a utility that interferes only with software part computer without touching the hardware.

Distinctive features of the utility

The arsenal of the application is characterized by wide functionality and an abundance of various tools for servicing internal and external drives, as well as the operating system, RAM and even the processor. Especially for gamers, a separate set of tools is provided that will prepare the hard drive to launch for especially powerful games.

Just like Computer Accelerator, this disk and operating system maintenance program has both free and advanced paid versions. The first received a modest but very effective functionality for working with drives and the registry, and the second can be called a complex for solving almost all problems associated with disks and the operation of the platform as a whole.

Wise Care 365

This disk maintenance program is distinguished by high-quality defragmentation of drives. The utility will not only put sectors and tracks in order, but will also do it as efficiently and quickly as possible. In addition, the application will deal with unnecessary files and data, removing them from the hard drive and the system registry.

The program allows you to easily and quickly optimize the operating system for any needs. Need a quick transfer of files from one place to another - specify the necessary folders, and the program will "prepare" them for any operations. If you want to play "heavy" games - the application will set up the platform by disabling unnecessary (for this process) components, and will process the hard disk space where the game files are located to improve performance.

The developer offers users a paid and free distribution license. The first has advanced functionality and optimizes your system inside and out. The second one is limited in tools, but the main trump card of the utility is defragmentation, it works as it should and in full.

CCleaner

This disk maintenance program has earned itself honor and respect among domestic consumers. The popularity of the utility is largely due to the possibilities free version, where almost all available functionality is available to the user without critical restrictions.

This software can be called a complex, where each branch is responsible for some separate direction. Recuva will recover deleted files, and CCleaner itself is responsible for fighting "garbage" in system registry and applications installed in the operating system.

Program features

Specifically, Defraggler deals with hard drives, which will analyze your drives with due meticulousness and give some recommendations. Well, as the name implies, it will do defragmentation, albeit protracted in time, but extremely competent.

This whole complex is aimed at optimizing the operating system and increasing performance by maintaining the hard drive and platform registries. The software copes with its task very well, which is why it is installed on a good half of the computers of domestic users.

Glary Utilities

Software can also be called complete solution for maintenance and the personal computer in general. In addition to the usual defragmentation, which, by the way, is very competent, the utility will carefully check all files and folders for damage, and if necessary, it will fix the problems that have arisen with them.

The program does not have a high speed of working with hard drives, but it does everything with due care, so you cannot blame it for incompetence. The long process is largely due to duplication of actions. Some types of hard drives "resist" the effects of such utilities and try to hide some of their data in different areas.

Program features

Glary Utilities through a double, and somewhere even a triple pass, it opens access to these nooks and crannies and competently conducts something like an inventory there. After that, the speed of the hard drive, especially if you have had it for a long time and works like an ox, increases significantly.

In order to avoid the snowball effect, you can pin the program to the tray or even include it in startup, after which it will monitor day after day, and, if necessary, interfere with the work of the hard drive and / or registry, correcting the problems that have arisen. The utility takes very little system resources, so its work practically does not affect the speed of the computer, but only the opposite - the speed of data exchange increases.

The program is distributed free of charge, but with some restrictions. The full paid version removes them, but for an ordinary user, additional functionality, as a rule, is unnecessary. The latter is designed for owners of serious computers, where more than two hard drives are installed, so for many, buying a professional version is simply not practical.

Carambis Cleaner

This is a modern and advanced software for maintaining drives and cleaning your computer from excess garbage. The program does not enjoy such enviable popularity as CCleaner or Glary Utilities, due to the too modest functionality of the free version. Despite this, as a tool for working with a hard drive, as well as increasing system performance, it will do just fine.

The program features luxurious functionality for all occasions. The abundance of tools allows you to do almost any procedure with a hard drive and system files: defrag, fix folders, individual files, preparing to launch "heavy" programs, cleaning the registry, installing and removing applications (even hidden ones), and much more.

Distinctive features of the program

Separately, it is worth noting the presence of competently. It can be run forcibly or included in startup. The scheduler will guide you through all the trouble spots on your computer and point you to existing problems. To prevent errors from accumulating, it will carry out procedures selected by the user every day, thereby providing not only a good increase in system performance, but also preventing serious problems that may occur with the hard drive or installed applications.

The latest versions of the utility are perfectly optimized for the new tenth Windows platform, so there should be no problems with integration. As mentioned above, the program is distributed free of charge, but with restrictions. If you have one regular home computer with one hard drive and several flash drives, you can completely get by with a stripped-down version. In other cases, it is better to buy an extended modification. The latter, although it will cost you a rather large amount (compared to the same "Computer Accelerator"), but worry about your many drives will dissolve every day at the sight of a window labeled "Optimized".

Hard drive problems are very common, and many users do not know what to do in such situations. And each hard drive repair program is designed to perform certain actions depending on the type of failure. The following are some of the types of failures and software tools allowing them to be eliminated.

Checking and Repairing a Hard Drive: Windows Programs and Tools

Before using such a tool, you need to find out the nature of the failure. The main types include the following:

violation of the structure of the file system;
damage to the surface of the hard drive;
software errors;
loss of information due to crashes or formatting.

Do not underestimate the funds presented in the operating Windows systems. Program for repairing hard Windows disk 7 or any other system is called ScanDisk and in the simplest case it is called from the partition properties menu, where the check start button is used on the service tab.

In this case, you need to specify the automatic correction of bad sectors, and if you wish, you can also use a surface check.

However, using a similar applet (chkdsk) called from command line(cmd) running as administrator in the Run console looks much better. For this tool, you need to enter additional attributes. Among the most commonly used, one can single out a check with the combinations /f /r and /x /f /r separated by a space. If system components are damaged, you can use the sfc /scannow command.

The best applications for treating a hard drive and recovering information

In order not to deal with the above procedures, many users also use third-party utilities, among which the following can be distinguished separately:

HDD Regenerator.
Viktoria.
R.Saver.
Acronis Recovery Expert.
Hetman Partition Recovery, etc.

We note right away that applications like Recuva, designed to recover deleted files or lost information from damaged HDDs, will not be considered only because of their absolute inefficiency.

HDD Regenerator

HDD Regenerator is a relatively recently developed program for diagnosing and repairing a hard drive, designed not to recover lost information, but to search for problems associated with physical damage to hard drives or software failures.

According to its creators, the work is based on the principle of magnetization reversal of the HDD surface, which makes it possible to full recovery hard drive performance. It works in DOS mode, which causes some problems for users to use, however, in some cases it shows nice results when no other remedy helps.

Viktoria

The Viktoria hard drive repair program from Belarusian developers, according to most professionals, is the best in its field and allows you to fix many software problems related to the file system, the appearance of bad sectors, etc.

It can be run in two versions: in DOS mode emulation and as a standard Windows application. However, as noted, it is better to use the first method, since checking in this mode is more efficient, not to mention eliminating failures and errors (like the difference in starting the standard Windows tools).

R.Saver

R.Saver hard disk repair software is designed to recover deleted or lost information. Its use is justified because the utility is able to find files, among which there may be important system components, even after formatting a disk or logical partition, completely rebuilding the file system.

Scanning, however, takes a lot of time, but the application finds files that the user may not even be aware of. And in most cases, it is the use of this program that is the best option even for removable USB HDDs, flash drives and memory cards of any standard.

Acronis Recovery Expert

This hard drive repair program is mainly used when the structure of the file system is violated and even allows you to create bootable media for those cases when starting the OS from the hard drive becomes impossible.

At the same time, the application has support for a huge number of file systems and large hard drives.

Hetman Partition Recovery

This utility, although it is positioned as a means of recovering information if it is lost after formatting or when software failures, however, can be used to troubleshoot the HDD.

The main advantage of the application is that it can be launched both in manual mode and using a special “Wizard”, which makes it possible to automate the processes of analysis (scanning) and data recovery.

Results

These are not all programs capable of servicing hard drives, but only a few of the most popular ones. But even a brief acquaintance with them allows any user to understand the principles of their functioning and scope. If you advise some kind of universal solution, at the first stage of repair you need to use the system tools (if possible), HDD Regenerator or Viktoria, and for subsequent data recovery - R.Saver or other software products.

excitation of a quartz resonator connected to the control microprocessor, or the arrival of clock pulses if used

external generator,

· all drive synchronization schemes.

Check hard drive reset circuit.

To do this, close and open contacts 1 and 2 of the interface connector of the drive and use an oscilloscope to observe the passage of the “RESET” signal to the control microprocessor and single-chip microcontroller. If clock pulses come to the control microprocessor (or a quartz resonator connected to the microprocessor is excited) and the reset circuit works, then the microprocessor must work out control program, as evidenced by the pulses at the outputs ALE, RD, WR.

2.4 Building an algorithm for troubleshooting or diagnosing a device (graphic sheet A2)

Fig.16 HDD troubleshooting algorithm

spinning of the spindle motor, during which a growing sound is heard (4 ... 7 s), then a click follows when the heads are removed from the parking zone and a very characteristic crackling sound that accompanies the recalibration process

The recalibration indicates at least the health of the reset circuit, the clock generator, the microcontroller, the spindle motor control circuit and the positioning system, the data conversion read channel, as well as the health of the magnetic heads (at least one - with which the initialization process takes place) and safety service information drive.

For further diagnostics, the HDD is connected to the Secondary IDE port, and in the BIOS, in the SetUp procedure, it is necessary to automatically detect connected drives. If the model of the hard drive being diagnosed is recognized, the simplest diagnosis is to try to create a partition on the drive being diagnosed (using the FDISK program) and then format it (Format с:/s). If defects are found during formatting (verification), information about them will be displayed on the computer screen. Detailed diagnostics of HDD is carried out by special programs.

Diagnostics of the hard drive programs

If after hard checks disk with the chkdsk utility you continue to experience

critical errors associated with the equipment, it is worth more thorough testing using specialized programs. As a rule, utilities of hard disk manufacturers, or programs such as Victoria or MHDD, are used for diagnostics.

Attention! Before testing the hard drive with third party programs all data must be backed up.

Hard Drive Manufacturer Utilities

The diagnostic utilities may be on the CD that came with the hard drive. In any case, they can be downloaded from the hard drive manufacturer's website. Links to some manufacturer's download pages are provided below.

· Western Digital: Data Lifeguard Tools (you must select a disk model).

Seagate: SeaTools.

· Hitachi: Drive Fitness Test.

Samsung: Shdiag.

Diagnostic tools from other manufacturers can be found on their websites.

Fig. 17 Victoria utility

Fig.18 MHDD utility

2.5 Troubleshooting Methods

Malfunctions and methods of repairing Hdd

Restoring a hard drive depends on the results of the diagnostics and the level of training of the master who undertakes this work. The hard drive, as the most complex and unreliable component of a personal computer, according to many, is usually beyond repair. I hasten to convince you otherwise. Most hard drive failures are typical failures, sometimes quite difficult to diagnose, but typical for various models. In the production of some models of hard drives, gross errors were made, which subsequently led to a quick failure of the drive. Other errors during operation are made by users who violate warranty obligations, which leads to various problems with the computer, including the hard drive. Accidentally and "accidentally" hard drives almost break down, and if this happens, then an accidentally broken hard drive may not be recoverable by accident. They brought me Hdd, which flew out from the eighth floor with a request - to save at least mp3 "shki, the collection of which the owner had been collecting for a couple of years. The disk looked like a compressed, cracked piece of metal, ready to be scrapped. The circuit board with microcircuits shattered into several pieces , the HDA was severely bent and with a large dent in the upper right corner, where the magnetic head control unit is located, it was already clear what could be happening inside ... I managed to start it up with the help of another board and another HDA, it would not even start spinning.Moral.Everything can be done, but everything can be restored.But to our happiness, not all breakdowns are so serious, of course, some of the malfunctions require special equipment, but in most cases you can do without for repair by improvised, and even more often simply by software.

Drive failures can be divided into several categories:

· And the most common fault is a logical fault. It includes malfunctions of the logical structure of the hard disk, layout, partitions and boot record. Restored with special programs or programs from manufacturers.

· Loss of service information. Also a very common problem. The repair is complete software methods, but requires special knowledge and some time, which does not necessarily pay off.

· Disk electronics failure. In case of minor malfunctions (burnt diode, resistance), self-replacement is possible, with more serious ones (microcircuits) without special equipment it is difficult.

· Damage to the mechanics of the disc. Malfunction of read-write heads, malfunction of control switches located inside the HDA, misalignment of magnetic disks, controller malfunctions. The most difficult malfunctions to repair. Most of the difficulties are due to the fact that it is necessary to disassemble the hard drive unit, which is fraught with serious consequences. In general, if you do not understand, it is better not to climb. And if it's just interesting, then the disassembled hard drive hanging on the wall, sparkling with the mirror surface of magnetic disks, looks very, very good;

2.6 Safety precautions when repairing the device (device) and working with it

Basic Precautions

A hard drive is a high-tech electronic-mechanical device that requires careful handling. The following basic rules of use must be observed:

Protect the drive from strong mechanical impacts - shocks, squeezing, vibration and avoid scratches, dents, chips, etc. impact.

Observe the temperature regime - the disk should not be supercooled, much less overheated. Temperatures above 100°C are lethal to almost any disc.

Do not allow moisture or other liquids to enter or enter the disc as this may cause corrosion or other damaging effects.

Do not open the hard drive or remove the controller board unless necessary or if you are not qualified to do so. It's very easy to break it.

Do not bring objects that have a magnetic field or objects close to the disc. electromagnetic radiation. Even a small magnet located nearby may be enough to disrupt functionality.

Do not allow foreign objects (metal, graphite) to close the external contacts.

Conclusion

In conclusion, we can say that the goal of the work was achieved by identifying the features of methods for diagnosing SVT in the workplace. Achieving the goal became possible due to the implementation of the set technical tasks, as well as the study of theoretical material on the research topic. In accordance with the theoretical material, the technology for diagnosing and repairing hard magnetic disks or hard disk drives (English hard (magnetic) diskdrive, HDD, HMDD) is described.

Western Digital - the most reliable and high quality;

benefit from external device for data storage with a volume of one and a half - two and a half hundred gigabytes or a portable volume of 40 GB is difficult to underestimate. True, the price of such discs is rather big. However, if you need to copy and move more than a hundred gigabytes, or significantly increase the data storage for a laptop, then the costs may justify themselves.

List of used literature:

http://www.wikiznanie.ru

http://materinki.narod.ru

http://www.mhdd.ru/

Bukhman A.A. Computing machines, their repair and maintenance. M. 1994.

M. D. Loginov, T. A. Loginova. Maintenance funds computer science. 2010

Yu. M. Kelim. Computer Engineering. 2011

L. G. Gagarina, A. A. Petrov. Contemporary Issues informatics and computer technology 2010