•  What is a hard disk drive (HDD)? What is a hard drive and why is it needed?

    Internal hdd what is it

    Hard Disk Drive, abbreviated hdd, one of the most important, most expensive and most complex components modern computer. HDD is designed for long-term storage of large amounts of information that a PC uses, files operating system and programs. It is from the hard drive, or as computer scientists call it “screw,” that the operating system is loaded. If a disk fails, you have to spend a lot of money buying a new hard drive. But most importantly, all information will be lost if a backup copy has not been created in advance.

    Hard drives are:
    — external — External HDD;
    — internal — Internal HDD.

    Features of choice internal hdd.

    Inside the case system unit internal hdd is what it is and what to look for when purchasing. Hard drives are designed to store information and load the operating system. To hard drives that provide reliable and operational work operating system, there are increased requirements. The requirements for internal hdd, whose main task is to store and process information, are completely different.
    The problem of choice is solved by the ability to install several hard drives in modern PCs, each of which performs its own tasks.

    Internal internal hdds are available for personal computer and for a laptop. They differ in size:
    — 3.55 inches for PC;
    - 2.5 inches - for a laptop.

    Options hard drives.

    The need to purchase a new device arises in two cases: there is not enough capacity of the working hard drive for normal operation computer or old disk out of order.
    The hard drive is one of the most unreliable PC components, as it combines a complex mechanical part and electronic boards. In addition, mechanics cannot withstand physical impact: vibration, shaking, shock. How do you know if your hard drive is bad? If there are problems with the device, the computer may reboot at any time, freeze during operation, or turn off.
    What is better to do: buy a new hard drive or repair the old one? The answer is clear: it is easier and cheaper to purchase a new internal hdd. These devices are rarely repaired.

    When choosing a hard drive, you need to consider three main parameters:

    1. Interface type.
    Your drive must be fully compatible with motherboard. Eat different options interfaces: SCSI, SATA, IDE and SAS. IDE connection only suitable for older computers. Nowadays it is most often used different versions SATA. Modern interfaces for connecting drives allow you to work with files much faster.

    2. Performance.
    The speed of the disk is affected by the spindle rotation speed. There are standard rotation speeds: from 5400 to 7200 rpm. How to make the right choice? 5400 rpm is enough to store data; if you need to install systems and programs, you need to select a screw with parameters of -7200 rpm. "Green" drives, having 5400 rpm, are characterized by low energy consumption and quiet operation. More revolutions provides greater read and write speeds.
    There are models that have speeds from 10,000 to 15,000 rpm. Used exclusively for servers and professional purposes.

    The intermediate memory buffer - cache, also affects the performance of the internal hdd. Cache values ​​range from 8 to 64 MB. The larger the cache size, the faster the screw:
    — 8 MB is enough for 500 – 750 GB;
    — 16 MB – for 1 TB.

    3. Capacity.
    HDD capacity is measured by the amount of information volume that fits on the device. The first internal hdds had a capacity of only 60 MB. The smallest hard drive capacity today is 160 GB. Modern devices most often have value ranges from 200 to 500 GB. The size of some devices can reach up to 3 TB.
    When choosing, focus on your needs and financial capabilities: the higher the capacity, the more information will fit, but the price also increases significantly.

    The last two parameters are quite difficult to combine on one device. Therefore, disks are conventionally divided into:
    - universal;
    - capacious;
    - fast.

    When choosing an internal hdd, you need to decide on the functional tasks. If there is one on the computer hard drive, then it is better to choose universal models that are manufactured with an optimal ratio of speed and capacity. A fast hard drive is used as system disk. To store large amounts of information, high-capacity disks are chosen. If the choice is made correctly, the entire system will work in a balanced manner and without failures.

    Advantages and Disadvantages different types internal hdd.

    Universal ones have a sufficiently high degree of reliability, and do not have serious shortcomings. Fast hard drives, in addition to being fast, are also highly reliable. Disadvantages include rapid heating and noise.
    Capacitive internal hdds are considered the most unreliable, especially models with a capacity exceeding 1 TB. The advantages of such hard drives are reduced noise, low power consumption and moderate heating.

    Peculiarities hdd selection for laptop.

    Laptops do not need fast or capacious internal hdds. It is best to choose a universal hard drive with balanced characteristics.

    The main differences between internal hdd for a laptop:
    1. The devices are smaller and more compact.
    2. Hard drives are installed with a spindle speed of 4200 to 5400 rpm, which ensures low power consumption.
    3. HDD capacity in laptops is no more than 200 GB.

    Like in a laptop

    You can replace the hard drive in your laptop yourself. Usually this does not cause any difficulties. The main condition is caution. In all laptops, the internal hdd is located in a metal frame inside the case. The new hard drive is inserted into the same frame.
    A prerequisite when replacing is to check the compatibility of the new one. internal device with laptop motherboard. If the newly purchased hard drive has an inappropriate connector, it will not be possible to install it. Therefore, before purchasing, study the instructions, clarify the technical parameters, and determine the type of interface. Most often for hdd connections are used SATA interfaces and IDE, differing in the width of the cable and connector.

    Currently, internal hdds, which are installed in laptops, are practically no worse in performance and speed. hard drives in PC. Moreover, the speed of access to information can always be increased by connecting an additional external drive.

    Manufacturers.

    Today there are five main brands in the lead:: Seagate, Western Digital, Toshiba, Hitachi, Samsung. There are, of course, other models brands. But, as a rule, these are licensed “repetitions” of already well-known models.
    Define best brand It’s not at all easy, just like saying which hard drive will last longer. Basically, all drives are quite reliable and have almost the same characteristics. But Seagate and Western Digital are still considered the most reliable companies.

    Do right choice reviews on various forums will help. Type the drive brand into a search engine and read customer reviews. You should not trust one site or forum. Use multiple sources to avoid wasting money and losing valuable information. Choose wisely. Important to remember: purchase hard drives It is necessary only from a trusted seller, and not at the bazaar.

    Greetings to all blog readers. Many people are interested in the question of how a computer hard drive works. Therefore, I decided to devote today’s article to this.

    A computer's hard drive (HDD or hard drive) is needed to store information after the computer is turned off, in contrast to RAM () - which stores information until the power supply is cut off (until the computer is turned off).

    A hard drive can rightfully be called a real work of art, only an engineering one. Yes, yes, that's right. Everything inside is so complicated. On at the moment All over the world, a hard drive is the most popular device for storing information, it is on a par with devices such as flash memory (flash drives), SSD. Many have heard about the complexity of the device hard drive and wonder how so much information fits in it, and therefore would like to know how the computer’s hard drive works or what it consists of. Today there will be such an opportunity).

    A hard drive consists of five main parts. And the first of them is integrated circuit , which synchronizes the disk with the computer and manages all processes.

    The second part is the electric motor(spindle), causes the disk to rotate at a speed of approximately 7200 rpm, and the integrated circuit maintains the rotation speed constant.

    And now the third, probably the most important part is the rocker arm, which can both write and read information. The end of the rocker arm is usually split to allow multiple discs to be operated at once. However, the rocker head never makes contact with the discs. There is a gap between the surface of the disc and the head, the size of this gap is approximately five thousand times smaller than the thickness of a human hair!

    But let's still see what happens if the gap disappears and the rocker head comes into contact with the surface of the rotating disk. We still remember from school that F=m*a (Newton’s second law, in my opinion), from which it follows that an object with a small mass and a huge acceleration becomes incredibly heavy. Considering the enormous rotation speed of the disk itself, the weight of the rocker head becomes very, very noticeable. Naturally, disk damage is inevitable in this case. By the way, this is what happened to the disk in which this gap disappeared for some reason:

    The role of friction force is also important, i.e. its almost complete absence, when the rocker begins to read information, while moving up to 60 times per second. But wait, where is the engine that drives the rocker arm, and at such a speed? You can't really see it because it's electromagnetic system, working on the interaction of 2 forces of nature: electricity and magnetism. This interaction allows you to accelerate the rocker to the speed of light, in the literal sense.

    Part four- the hard drive itself is where information is written and read from; by the way, there can be several of them.

    Well, the fifth and final part of the hard drive design is, of course, the case into which all other components are installed. The materials used are as follows: almost the entire body is made of plastic, but the top cover is always metal. The assembled housing is often called a “hermetic zone”. There is an opinion that there is no air inside the containment zone, or rather, that there is a vacuum there. This opinion is based on the fact that at such high speeds of rotation of the disk, even a speck of dust that gets inside can do a lot of bad things. And this is almost true, except that there is no vacuum there - but there is purified, dried air or neutral gas - nitrogen, for example. Although, perhaps more earlier versions hard drives, instead of purifying the air, it was simply pumped out.

    We were talking about components, i.e. what does a hard drive consist of?. Now let's talk about data storage.

    How and in what form is data stored on a computer’s hard drive?

    Data is stored in narrow tracks on the surface of the disk. During production, more than 200 thousand of these tracks are applied to the disc. Each track is divided into sectors.

    Maps of tracks and sectors allow you to determine where to write or read information. Again, all information about sectors and tracks is located in the memory of the integrated circuit, which, unlike other components of the hard drive, is located not inside the case, but outside and usually at the bottom.

    The surface of the disk itself is smooth and shiny, but this is only at first glance. Upon closer inspection, the surface structure turns out to be more complex. The fact is that the disk is made of a metal alloy coated with a ferromagnetic layer. This layer does all the work. The ferromagnetic layer remembers all the information, how? Very simple. The rocker head magnetizes a microscopic area on the film (ferromagnetic layer), setting the magnetic moment of such a cell to one of the states: o or 1. Each such zero and one are called bits. Thus, any information recorded on a hard drive, in fact, represents a certain sequence and a certain number of zeros and ones. For example, photograph good quality occupies about 29 million such cells, and is scattered across 12 different sectors. Yes, it sounds impressive, but in reality, such a huge number of bits takes up a very small area on the surface of the disk. Each square centimeter of a hard drive's surface contains several tens of billions of bits.

    How a hard drive works

    We have just looked at the hard drive device, each of its components separately. Now I propose to connect everything into a certain system, thanks to which the principle itself will be clear work hard disk.

    So, the principle on which a hard drive works next: when the hard drive is put into operation, this means that either writing is being done to it, or information is being read from it, or from it, the electric motor (spindle) begins to gain momentum, and since the hard drives are attached to the spindle itself, accordingly they go with it also begin to rotate. And until the revolutions of the disc(s) have reached a level such that an air cushion is formed between the rocker head and the disc, the rocker arm is located in a special “parking zone” to avoid damage. This is what it looks like.

    As soon as the speed reaches the desired level, the servo drive (electromagnetic motor) moves the rocker arm, which is already positioned in the place where information needs to be written or read from. This is exactly what contributes to integrated circuit, which controls all movements of the rocker.

    There is a widespread opinion, a kind of myth, that at times when the disk is “idle”, i.e. No read/write operations are temporarily performed with it, and the hard drives inside stop rotating. This is truly a myth, because in fact, the hard drives inside the case rotate constantly, even when the hard drive is in energy saving mode and nothing is written to it.

    Well, we have looked at the device of a computer hard drive in detail. Of course, within the framework of one article, it is impossible to talk about everything related to hard drives. For example, this article did not talk about - this is a big topic, I decided to write a separate article about it.

    I found an interesting video about how a hard drive works in different modes

    Thank you all for your attention, if you have not yet subscribed to updates on this site - I highly recommend doing so so as not to miss interesting and useful materials. See you on the blog pages!

    We, personal computer users, often come across the abbreviation HDD. And the desire to know what a HDD is, where it is and what it is needed for is justified.

    HDD stands for " hard disk drive". Simply put, it is a hard drive. They are gradually becoming a thing of the past, being replaced by SSDs, but HDDs will occupy their niche in the market for a long time.

    Why is the drive "hard"

    There is no name for HDD in a computer. Hard drive, hard drive, hard drive, screw - just a small list of its names. Why "hard disk drive"?

    Unlike “floppy” disks (floppy disks), data on HDDs is recorded on hard plates, and they, in turn, are covered with a layer of ferromagnetic material. They are called nothing more than “magnetic disks”. A hard drive uses one or more platters on one axis. Reading devices (heads) do not touch the surface of the plates during operation. This is explained simply: with the rapid rotation of the plates, a layer of incoming air flow is formed. The distance between the reading device and the working surface is very small - only a few nanometers, and the air layer, which eliminates mechanical contact, ensures a long service life. If the plates do not rotate at the proper speed, then the heads are in the so-called “parking” zone - outside the boundaries of the plates.

    A distinctive property of a HDD in a computer is that the storage medium is combined with a drive, as well as with a block of necessary electronics in one housing.

    Main characteristics of HDD

    Like any technical device, the hard drive has a number of characteristics, based on which we can draw conclusions about its relevance.

    • Capacity is one of the most significant quantities. Characterizes the amount of data that can be stored by the drive.
    • Dimensions (form factor). The most common variations are 3.5 and 2.5 inches. Defines the width of the device.
    • Rotation speed of the axis and spindle. The number of its revolutions per minute. The parameter significantly affects the speed of data access and directly the speed of their transfer. The most common options: 4200, 5400, 7200, 10,000 rpm.
    • The number of I/O operations per second. For modern disks this number approaches 50 (with random access to data); with sequential access, it is correspondingly higher - about 100.
    • Energy consumption is an important parameter for portable devices(we're talking about laptops/netbooks).
    • Buffer size. Buffer is intermediate memory. Its purpose is to smooth out differences in read/write speeds. In modern HDDs it is usually located in the range from 8 to 64 megabytes.

    I hope we were able to understand what a HDD is in a computer, and even expand our horizons a little in the world of computer hardware.

    Hard drive or HDD This is a device that allows you to store information for a long time and is non-volatile. In simple words, a metal box that contains all your documents, movies, operating system and everything else. If we draw a life analogy, it is something like a big album. Taking a pencil in your hands, you can draw or write essays. If you don't like something, you can always take an eraser. The bottom line is that while the album is on the shelf, all data remains untouched.

    Important aspects in in this case two. The first is long-term storage. The second is energy independence. If in the first case everything should be clear from the example with the album, then for the second case I will give some explanations. The bottom line is that a hard drive does not require power to store information, unlike RAM. So you can turn off your computer from the network and know that your data will be safe.

    Note: There is a common version of where the slang names for this box came from. Today, a hard drive is often called a hard drive or, for short, a screw. This came from the fact that the first such device had a code similar to cartridges for a Winchester rifle. How true this is is difficult to say, but the version is considered the most realistic.

    Let's take a closer look at this box.

    If you noticed, I have already mentioned the abbreviation HDD several times and for good reason. The point is that technical name this box is a storage device for hard magnetic disks or hard (magnetic) disk drive.

    But, let's return to the hard drive device. This box is based on magnetic recording technology. And this is how it works. There are round hard drives (they are also often called pancakes) coated with a ferromagnetic material (which can change its magnetic properties). There is a special moving head (consists of two parts), which, in fact, reads and writes data (part of the head for reading, part for writing).

    The process itself goes as follows. The disk is constantly spinning with sufficient high speed, and the head moves along the disk and at the right moment either reads data or writes. It is important to note that the head does not touch the disk, as otherwise the coating on the disk could be damaged. When the disk is turned off, the head is in a special zone (parking), again to protect the ferromagnetic coating from damage.

    It is worth knowing that the internal mechanism is made in such a way that it would be physically very difficult to damage the surface of the data disk. However, over time, parts of the ferromagnetic surface may become unusable. Here, as in the famous expression - “Nothing lasts forever.”

    It is also worth knowing that there may be several such plates inside the hard drive box. As you probably already guessed, the number of pancakes affects the amount of information stored. But it doesn't stop there. For example, a long time ago, disks were 1.5 times larger than today’s ones, and 20-40 MB were placed on them.

    Figure 1. Simplified diagram of a circular hard drive

    Note: In the figure the numbers indicate: 1 - geometric sector, 2 - track sector, 3 - track, 4 - cluster.

    Let's look at the surface of the pancakes in a little more detail. So that the storage and recording of information can be structured, the entire surface is divided into special tracks. Then the entire disk is divided into geometric sectors (equal to each other). The part of the track that is inside this geometric object is called the track sector or simply sectors. A combination of several sectors is called a cluster.

    Since disks spin at a fairly high speed (for example, 7200 rpm), a cluster is used as the minimum storage unit. Typically, a cluster is 4 KB in size and consists of 8 sectors of 512 bytes each. By the way, that's why actual size text file, consisting of just one character, will be equal to 4 KB, since, in principle, the size is divided precisely by clusters.

    Note: It is worth knowing that there are methods that allow you to store data from several files in one cluster, but usually the division is done by clusters.

    Note: I also advise you to read the article Solid State Hard Drive or SSD Drive, as this is the next wave of data storage devices.

    Hard drive specifications

    If with device of hard disks, I hope it became clear to you, then to complete the picture it remains to consider the issue of the main characteristics of the HDD.

    1. Form factor. The words are scary, but in fact they only mean the physical size of the disk. For desktop computers it is usually 3.5 inches, for laptops it is smaller, only 2.5 inches

    2. Capacity. This is essentially how much data a hard drive can store. Today, disks are measured in gigabytes and terrabytes.

    3. Spindle speed. This is exactly the speed at which the pancakes spin. Typically this is 5400 for laptops and 7200 for regular computers. There are other speeds, but home use they are simply not needed.

    4. Noise level. Here, you can probably guess for yourself what we are talking about. There are very loud hard drives, usually the simplest ones, and there are also quieter ones.

    5. Impact resistance or, in common parlance, survivability. Essentially, it indicates how much overload a hard drive can tolerate without damaging data. However, I strongly advise against checking this characteristic.

    6. Access interface. The interface defines the connectors that are used to connect drives to the computer. Previously, almost all HDDs for home computers were IDE, but today we are mostly talking about SATA. In case external drives usually USB. It’s worth knowing that in reality the connector of the disk itself is not USB; it’s just that an adapter with a controller is used inside the box.

    The hard drive, or hard drive, is the main and very important part of the computer. It stores not only the operating system that controls the computer, but also all the information of a client or several clients. It often happens that the value of information is many times greater than not only the cost of the hard drive itself, but also the cost of the computer as a whole. Therefore, the security of information largely depends on the quality and reliability of such a drive. A modern hard drive looks like the one shown in the picture.

    What is a hard drive?

    So, what exactly is a storage device, the performance of which determines the well-being and good mood of its owner? In fact, a hard drive is a high-tech equipment that stores digital information even when the computer is turned off.

    To be more precise, a hard drive consists of several magnetic disks onto which information is applied and read using a magnetic head. These heads, together with magnetic disks are in a vacuum, which allows the drive to operate without the influence of the external environment on the process of writing and reading information.

    What types of hard drives are there?

    So, we found out that a hard drive is an information storage device for a computer. Now let's figure out what types of HDD there are. First of all, it should be noted that hard drives can be divided into two categories:

    • External drives that can be connected to any computer via a USB interface. In some ways they resemble a flash drive, only larger in size. Special software such hard drives do not need it.
    • Internal HDD drives are installed inside computers and have specific connectors for both power and information transfer.

    Internal HDDs are also divided into several categories. There are several criteria by which a hard drive can be classified. This is the physical size of the hard drive. There are three standard sizes:

    • 5.5 inches. Typically, hard drives of this size are used in desktop computers, Where free space quite a lot.
    • 3.5 inches are used mainly in laptops where space is limited and large amounts of memory are needed.
    • 2.5 inches are used in ultrabooks where space is very limited.

    Another feature by which drives are classified is the data exchange protocol between the hard drive and the computer. What protocols can the hard drive use? They are as follows:

    • IDE- old version protocol, which was used mainly on computers and laptops before 2000.
    • SCSI is a contemporary of IDE, more high speed version drive management, which was used mainly in server machines. It required special drivers to use such hard drives.
    • SATA- modern version protocol, which has several options and has a high speed of writing and reading information. Used in almost all modern computer systems.

    Hard drive problems

    One of the most frightening messages that can be seen on the screen is that the computer cannot see the hard drive. Why is this so scary for computer users? With such a malfunction, the device does not load the operating system, and accordingly, practically no actions provided for by this system can be performed.

    What could cause this problem? The simplest problem leading to this result is a violation of the integrity of the power cables or the system interface. Often, dust or dirt getting inside such a connector leads to this malfunction. And most experienced users are not particularly scared when such a message appears, but simply reconnect the power and interface connectors. This inscription may look something like the one shown in the photo above.

    Hard drive not visible for BIOS

    When such a malfunction occurs, the first thing to determine is whether this problem physical or software. How to find out? After a message appears that the computer does not see the hard drive, you need to reboot the machine and enter the BIOS. What is BIOS? This is a program that is written into the ROM of the computer's motherboard. It loads even before the operating system and determines the peripheral devices with which it will work motherboard. For BIOS boot you need to press the appropriate key on the keyboard, usually the DEL or F2 button. After entering the BIOS, you can see the following picture.

    This photo shows that the BIOS was not detected on computer hard disks. In this case, the problem described above could occur, and the computer, being disconnected from the power cable or interface, is invisible to the BIOS. On the other hand, any malfunction in the hard drive control board will lead to such a problem. Moreover, if it is possible to solve this problem, then only in the appropriate service center. It is almost impossible to eliminate it on your own at home.

    Windows 7 does not see the hard drive

    But there are times when the hard drive is visible to the BIOS, but the operating system does not boot or constant reboot Windows. In what cases does this happen? Then, when, while working with the operating system, one of the system files or an error occurred during rewriting and the file is not read correctly. Physical damage to the hard drive, scratching or chipping of the disk surface may also occur. If one of the system files was located in this location, then the operating system will not be able to read it and will issue, as system administrators say, blue screen death, which prompts you to reboot the system. If the error repeats, it is better to contact system administrator. Sometimes such software errors can be easily fixed without reinstalling the operating system. But it happens that they are fatal, and they can only be corrected with the help of complete reinstallation systems. To solve this kind of problem they usually use system utilities who are engaged in restoration software errors. What are these programs?

    Hard drive software errors

    There are quite a lot of programs for recovering software errors, which can be divided into two categories. The first includes utilities that are located inside the system and can be used after full load operating system. These are sets of programs for servicing hard drives.

    For example, how to maintain a Windows 7 hard drive? You can maintain your drive directly from the program. To do this, just go to “My Computer” and select the disk that we want to service. Click on the "Properties" tab and see the following picture, shown in the photo above.

    Hard drive maintenance programs

    As you can see in the picture, the user is offered three utilities:

    • Check for errors.
    • Disk archiving.

    Only the first program corrects errors, and the others will simply service this disk. But there are programs that work without an operating system. The advantage of such utilities is that they can maintain the disk even when the operating system does not boot. For example, one of these programs is called FDISK and was developed by Microsoft as a disk maintenance utility before installing the operating system. It is used experienced users computer equipment Norton Disk Doctor, and there are actually quite a lot of such programs, so the choice largely depends on preferences specific person. Before installing Windows from a hard drive, it is advisable to service it with a similar program and correct possible errors.

    Hard drive recovery

    Often, many users are faced with the problem of recovering data from a problematic hard drive. As mentioned above, often the information stored on it is valued much more than the hard drive itself. Therefore, the work of recovering lost data is not only valuable, but also highly paid. Much depends on how the information disappeared. It is important to remember how Windows deletes information from your hard drive.

    The operating system does not erase information that the user wants to remove. It simply deletes the hard drive's table of contents, which allows you to find this information. This table of contents is called a FAT table. And if after that the body is hard Windows disk 10 other information was not recorded, it is quite easy to restore it. There are many programs that can do this job. According to many users, one of the best is Acronis Recovery Expert.

    Hard Drive Backup

    Be that as it may, no user wants to be constantly under the threat that valuable information is in danger. Therefore, efforts are made to minimize risks. What can be done? Backup useful information the hard drive as a whole or hard sector disk helps solve this problem.

    What backup methods are there?

    • IN manual mode. The user independently chooses what information and when the program will save. Some companies in own offices prefer to produce backup data at the end work shift. But there is a danger of losing information that has accumulated during the day.
    • Backup to automatic mode. At the same time, the program includes how often and what should be copied and saved.
    • Creating a mirrored RAID array that stores all the information from the main hard drive in parallel on another hard drive. If the latter fails, you can easily use a mirror.

    Selecting a hard drive

    Paying great attention to the safety of information, you should not forget about the choice of the hard drive manufacturer, as well as technical parameters, characterizing the quality of this hard drive. If we talk about the brand of the drive manufacturer, then it is worth choosing a more well-known company, although such a hard drive will cost a little more. Some users prefer Seagate.

    If we talk about technical parameters, then, all things being equal, it is worth paying attention to the speed of reading and writing information. Sometimes this data will help you make a choice in favor of one or another hard drive.

    Let's sum it up

    So, a hard drive is a very valuable and important information on the computer. Therefore, you need to put a lot of effort into choosing a high-quality hard drive. You should also take care to regularly maintain your device. In addition, it is important to pay attention to the security of information, if any, on your computer. If you make all these efforts, your hard drive will serve you for a long time, and the information on it will be completely safe. The operation of your device is entirely in your hands, so take all measures to ensure its normal functioning.

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