What to do if Bios does not see the hard drive. The system does not see the hard drive: possible causes and solutions to the problem Motherboard does not see the ide hard drive

Below is a list of the main problems due to which the BIOS does not see HDD SATA. To find out the true cause of the malfunction, it is necessary to carry out a sequential diagnosis of all interconnected nodes of the computer in order to determine their operability.

The hard drive is not set as enabled in the BIOS.
Serial ATA drivers installed incorrectly or not installed at all.
The data cable is damaged or not connected.
The disk drive is not spinning.
The jumpers on the drive case are set incorrectly.
The hard drive is faulty.

First you need to make sure that the device under test is enabled in the BIOS. To do this, you need to enter the settings - at the very beginning of the operating system startup, press the F2 or Del key. Depending on the modification of the system, there may be different options. What exactly do you need to press to enter the BIOS settings? The instruction appears at the bottom of the screen when you turn on the computer for a short time. If you skip the period, you will have to turn off the computer again and wait for the moment you enter the settings.

Find a hard drive that is not detected on one of the settings screens and see what is written opposite it. Automatic detection must be set to Automatic. If it says Off. (Off) you need to switch to automatic detection. This problem is typical in cases where a newly installed hard drive with a SATA connection is not detected.

Motherboard drivers not loaded

Problems with installing drivers most often occur when OS Windows is installed on a disk drive that is used as the main boot drive. Then the BIOS does not see the SATA hard drive due to driver problems.

To correctly download and install the drivers, perform the following manipulations:

Download Windows distribution into the DVD drive tray. After that, unplug your computer from the mains.
Insert a SATA hard drive and connect it. Turn on your computer.
During the installation process, you will need to press the F6 key at the appropriate time to start the driver installation process. During the normal installation progress of the system, a screen will briefly appear stating that the missing drivers must be loaded in order for the system to install normally: “Press F6 if you need to install a 3rd party driver”. Try not to miss a moment, otherwise you will have to start all over again.
After a while, an interface for downloading drivers for the SATA controller will appear. Press the S key to continue installation.
To download the drivers, you will need disks with installers, you need to find and download this in advance on the Internet, on the website of the manufacturer of the motherboard that you have installed on your computer.

Data cable failure

Open the system unit and carefully inspect the connected to motherboard and hard drive cables. In the presence of visible mechanical damage, this is the problem. Data cables are easily bent, broken, and this leads to a lack of contacts in the connections. It is advisable to check the cable by replacing it with a known working analogue.

Seagate Technical Services would like to point out that for normal operation devices, the length of the SATA cable does not exceed one meter. It is not uncommon for SATA cables to simply fall out of their connectors due to computer vibration during operation. Check the reliability of the cable connection to the SATA ports.

When connecting loops, be guided by the following conditions:

The blue connector should connect to the motherboard controller.
The gray connector is used to connect the Slave - an auxiliary hard drive.
The black connector is for the Master - the main drive.

If the cable slave order is reversed, it confuses the BIOS and leads to device identification errors.

Disc not spinning

The Winchester will not be found if it is not receiving power and is not spinning. Outwardly, it is impossible to see the rotation of the disk, it remains to rely on indirect signs.

With the power off, open the system unit, then turn on the computer and listen. With caution, try touching the side wall of the hard drive. If vibration is felt, the disc is spinning.

If nothing is clear, try plugging and unplugging the drive's power cable and compare the sound. To check if the power cable is working, plug it into a DVD drive, where you can see for sure whether the disc is spinning or not.

It is also useful to check whether the installed power supply supplies enough power? It is possible that as upgrades system block power consumption has increased significantly and now there is simply not enough current to maintain the required performance of the equipment.

To make sure that the device under test is working properly, remove it from the tested system unit and install it on a known working computer. If it does not work, the hard drive itself is faulty.

As part of the BIOS tools, there is a function for testing connected drives for operability. Run the test and see the results. If any disk is faulty, it will be clear after the test.

Incorrect jumper settings on the drive case

First you need to check if the jumpers are correctly distributed on the Master-Slave feature. If the same parameters are set on both devices, the BIOS will not be able to detect them correctly.

A diagram of the correct location of the jumpers is drawn on the drive cases. Set them according to the desired drive priority in the BIOS.

If you turn on the PC and its BIOS does not see the SATA hard drive, then, despite the fact that this situation, of course, cannot be called pleasant, in some cases it can still be successfully resolved. However, the methods for solving the problem and the likelihood of success largely depend on the causes of the malfunction, which theoretically can be several.

Hard drives have long taken a leading position in the field long-term storage information as devices that combine high capacity, low price and acceptable characteristics of reliability and speed. While hard drive technology may not have evolved as fast as other computer components, such as processor and memory, however, today's hard drives are far superior to their predecessors in terms of capacity and speed. In the last decade, significant progress in the field of improving the parameters of hard drives was largely associated with the transition to new technology data exchange between the hard drive and motherboard– . At present, SATA hard drives have practically replaced IDE hard drives from everyday life, largely due to their high speed and the absence of limitations typical of IDE drives. In particular, connecting SATA hard drives to a computer is much easier and faster compared to IDE drives.

However, users of SATA drives are not immune to problems either. Often there is a situation when the hard drive is not seen by the old operating system. But the problem that the hard drive is not recognized already at the BIOS level is especially unpleasant. In such a case, of course, this hard drive cannot be used for data storage; in addition, it is impossible to download from it personal computer.

There may be several reasons for the situation when the BIOS does not see the hard drive, but basically they can be divided into the following categories:

Hard drive or motherboard failure
Drive connection error
Error when setting BIOS options

Errors when setting BIOS options and their correction

Many BIOSes have a number of options that allow you to configure the operation parameters of the SATA host controller built into the chipset of the motherboard. In some cases, incorrect setting of the values of such options can lead to the inoperability of all or some of the hard drives connected to the computer, or to the inoperability of certain types of them, for example, drives connected to IDE or SATA connectors.

In particular, the option found in some BIOSes has the PATA Only option, which disables support for SATA hard drives, leaving only IDE interface drives for use. In addition, if the controller in the BIOS is configured in such a way that it supports the traditional mode of accessing drives in IDE mode, then in this case the system can support no more than 4 drives, and all extra drives will simply not be visible.

Sometimes it happens that the BIOS does not see the second one installed in system hard SATA disk. In this case, the problem may lie both in a BIOS error and in the fact that SATA drives are different versions SATA, for example, the first is to SATA-2, and the second is to SATA-3. In this case, it is best to set second hard the disk is also set to SATA-2 mode using the corresponding jumper on its case.

Some options, such as Serial-ATA Controller, allow you to disable the SATA controller altogether. In this case, all drives connected to the motherboard connectors will not work.

It should also be noted that in some BIOS you can disable automatic detection hard drives. Check if you have such an option, and if so, set its value to Auto.

In addition, in some cases, especially for older motherboards and BIOS, there may be errors in the BIOS that prevent the system from correctly recognizing the hard drive. To eliminate this possibility, you need to reset the BIOS to default settings, and if the BIOS still does not see the disk, then update the BIOS version of the computer.

Errors when connecting drives to the motherboard, physical failure of drives and other components of the system unit

SATA hard drives do not require jumper settings to select the Master and Slave operating modes, which are vital for the operation of IDE drives, so they do not need to be configured in the system. In addition, SATA connectors and cables are much more convenient than IDE connectors and cables, and therefore most users have no particular problems when connecting hard SATA drives. However, insufficiently tight contacts between cables and sockets can also lead to a situation where the BIOS does not see the SATA hard drive installed in the system. In the event that you make sure that the controller configuration in the BIOS is configured correctly, but the BIOS still does not see the disk, it makes sense to check the reliability of the cables connected to the motherboard, and also check the cables themselves by changing them to other cables of the same type.

If after this procedure BIOS checks still does not see the hard drive, that is, it makes sense to check it elsewhere by taking the second system unit - it is quite possible that the problem lies in the hard drive itself - in the disk controller or in the mechanical drive. In the first case, the disk, most likely, can be repaired, in the second case, you will have to look for a replacement for it.

In some cases, the problem may not be with the hard drive, but with the SATA host controller on the motherboard. If so, then the motherboard will likely need to be repaired. There are also cases when the BIOS does not see hard drives due to a faulty power supply.

Conclusion

The situation when the BIOS of a personal computer does not see one or more hard drives operating using the SATA interface, fortunately, is not so common. However, a similar problem may occur, especially if the computer is using old version BIOS containing errors, as well as if two SATA disks belonging to different generations of SATA are installed in the system at the same time (in such a case, the second disk may not be detected). Also, in some cases, there may be an incorrect setting of BIOS options, incorrect or inaccurate connection of drives using data or power cables. The user is also not immune from hardware failures in the operation of the disk controller, as well as in the operation of the SATA host adapter located on the motherboard. In the latter cases, the problem can be corrected, as a rule, only by contacting the service center specialists.

Hard drives have long taken a leading position in the field of long-term storage of information as a device that combines high capacity, low price and acceptable characteristics of reliability and speed. While hard drive technology may not have evolved as fast as other computer components such as processors and memory, hard drives today are far superior to their predecessors in terms of capacity and speed. In the last decade, significant progress in the field of improving the parameters of hard drives was largely associated with the transition to a new technology for exchanging data between a hard drive and a motherboard -. At present, SATA hard drives have practically replaced IDE hard drives from everyday life, largely due to their high speed and the absence of limitations typical of IDE drives. In particular, connecting SATA hard drives to a computer is much easier and faster compared to IDE drives.

However, users of SATA drives are not immune to problems either. Often there is a situation when the old operating system does not see the hard drive. But the problem that the hard drive is not recognized already at the BIOS level is especially unpleasant. In such a case, of course, this hard drive cannot be used for data storage; in addition, it is impossible to boot a personal computer from it.

There may be several reasons for the situation when the BIOS does not see the hard drive, but basically they can be divided into the following categories:

Hard drive or motherboard failure
Drive connection error
Error when setting BIOS options

Errors when setting BIOS options and their correction

Sometimes it happens that the BIOS does not see the second SATA hard drive installed in the system. In this case, the problem may lie both in a BIOS error and in the fact that SATA drives belong to different versions of SATA, for example, the first one is for SATA-2, and the second one is for SATA-3. In this case, it is best to set the second hard drive also in SATA-2 mode using the appropriate jumper on its case.

Some options, such as Serial-ATA Controller, allow you to disable the SATA controller altogether. In this case, all drives connected to the motherboard connectors will not work.

It should also be noted that in some BIOSes you can disable the automatic detection of hard drives. Check if you have such an option, and if so, set its value to Auto.

Errors when connecting drives to the motherboard, physical failure of drives and other components of the system unit

SATA hard drives do not require jumper settings to select the Master and Slave operating modes, which are vital for the operation of IDE drives, so they do not need to be configured in the system. In addition, SATA connectors and cables are much more convenient than IDE connectors and cables, and therefore, most users do not have much trouble connecting SATA hard drives. However, insufficiently tight contacts between cables and sockets can also lead to a situation where the BIOS does not see the SATA hard drive installed in the system. In the event that you make sure that the controller configuration in the BIOS is configured correctly, but the BIOS still does not see the disk, it makes sense to check the reliability of the cables connected to the motherboard, and also check the cables themselves by changing them to other cables of the same type.

If, after this verification procedure, the BIOS still does not see the hard drive, then it makes sense to check it elsewhere by taking the second system unit - it is quite possible that the problem lies in the hard drive itself - in the disk controller or mechanical drive. In the first case, the disk, most likely, can be repaired, in the second case, you will have to look for a replacement for it.

Conclusion

The situation when the BIOS of a personal computer does not see one or more hard drives operating using the SATA interface, fortunately, is not so common. However, a similar problem can occur, especially if the computer is using an old BIOS version that contains errors, and also if two SATA drives belonging to different generations of SATA are installed in the system at the same time (in such a case, the second disk may or may not be detected). Also, in some cases, there may be an incorrect setting of BIOS options, incorrect or inaccurate connection of drives using data or power cables. The user is also not immune from hardware failures in the operation of the disk controller, as well as in the operation of the SATA host adapter located on the motherboard. In the latter cases, the problem can be corrected, as a rule, only by contacting the service center specialists.

The hard drive is the main device of your computer or laptop. It contains the operating system that runs the machine. It also stores all your data. Without it, it is impossible to imagine the work of electronic computers. Therefore, it must be handled carefully and carefully. After all, if this part fails, you can lose all your valuable information.

However, it often happens that your BIOS does not see the hard drive. A number of factors influence this. First of all, you need to check the correct connection of the device to the motherboard. Pay attention to the power supply cord that comes from the power supply. If there are no problems with this, then try connecting your hard drive to another controller on the board. It also makes sense to replace the interface or power cable. These are rare cases, but they do happen.

It also happens that the BIOS does not see the hard drive due to insufficient power or a malfunction of your power supply. Therefore, it is worth paying attention to this nuance. In the event that the BIOS does not see the SATA hard drive, try changing the adapter from the IDE. Do not forget that for IDE devices to work in your BIOS, support for such drives must be enabled.

Go to advanced settings, where you can select the configuration of connected devices. Here you can activate the controller for the IDE hard drive. Don't forget to exit and save your changes afterwards. If your system unit already has equipment that has a new SATA interface, but you still need to connect another hard drive with an IDE interface, the above procedure is also required.

Pay attention to the fact that the IDE and SATA devices you need have the inscription ENABLED. The maximum allowed number of IDE devices cannot be more than two per controller. If you have two connected and the BIOS doesn't see the hard drive, try unplugging one.

Also in my practice there were such devices that under no circumstances wanted to be displayed as slaves. The BIOS also does not see the hard drive if you incorrectly set the jumper, which is responsible for the operating mode (master, slave and device determined by the loop). See if you have one first. If so, then there should be a diagram of the correct inclusion on the top of the disk.

These are the main problems that can occur with serviceable hard drives. I want to draw attention to the fact that very rarely the BIOS does not see the SATA hard drive. There are almost never any problems with these devices. If you still encounter them, try changing the cable and going to the BIOS factory settings. If this does not help, you need to check the device itself.

I hope you understand what you need to pay attention to first. As a rule, all these methods work and help. If nothing works out for you, and the device still refuses to work, contact special service workshops. They will be able to determine the exact cause of the problem and, if possible, return the hard drive you need to life. Under no circumstances should you try to disassemble it yourself.

Hello, friends! Yesterday I assembled a new computer for a friend and wondered why the BIOS does not see the hard drive. After I figured out this problem, it turned out that it was necessary to put a jumper. But there are other cases when the hard drive is not detected in the BIOS and in the operating system, I will tell you about the solutions to these issues in this article.

Before I find out why the BIOS does not see the hard drive and what to do, I would like to say that there may be several reasons. I have described all of them below, so read carefully.

The disk drive does not rotate;
The hard drive is set to BIOS but not enabled;
Serial ATA drivers are not installed/incorrectly installed;
There was a problem with the hard drive;
Data cable not connected/damaged;
The jumpers on the drive case were set incorrectly.

To identify the cause of the malfunction, it will be necessary to conduct a complete and consistent diagnosis of all computer components. About how to do it better and faster, I'll tell you now.

What to do if the hard drive is not spinning

Unfortunately, you will not be able to see the rotation / non-rotation of the disk visually. It remains only to guess about it through some indirect signs.

Turn off the computer from the network and open the cover of the system unit.
Now turn on the power and listen carefully. If you touch the side wall of the hard drive and you will feel a vibration - everything is in order, the disk is rotating.
If there is no characteristic noise and vibration, then you can turn on and off the drive's power cable and compare the results. If the noise changes at least somehow, then the disk is working.

Hard Drive Not Enabled/Incorrectly Connected to BIOS

An indication of this will appear when you turn on the computer at the bottom of the screen. However, the indication appears only for a short period of time, and if you miss this moment, you will have to turn the PC off and on again and wait until you enter the settings category.

Now on the settings screen you will need to find the hard drive that is not detected. What is written opposite it? In theory, automatic detection should be specified - Automatic. If you have Off, then switch to automatic detection. This happens when a new hard drive with a connected SATA interface is installed.

Many users use a disk drive that stores their Windows OS files to store their data - photos, music, movies, documents, etc. However, you cannot store your data on the same disk as the operating system.. Because of this, problems often occur with installing drivers and the BIOS therefore does not see the SATA hard drive.

Insert a Windows disc into the DVD tray.
We turn off the computer from the power supply.
We insert the SATA hard drive, connect it.
Turn on the power supply of the computer.
When the installation process begins, you can press F6 at any time - and then the driver installation will start. If the installation goes as expected, then at some point an inscription will appear that for correct installation the missing driver needs to be loaded. You can not miss this moment, otherwise you will have to start all over again.
An interface for downloading drivers for the SATA controller will appear soon. Click on S to continue with the installation.
You will need discs with installers for various drivers and programs. They can be downloaded in advance from any sites.

Drive jumpers

Take a closer look and you will see that the correct jumper layout is on the case of all drives.

So, what to do if the data cable is not connected correctly or is defective?

We open the system unit and look at the cables that stretch to the motherboard and hard drive. If any mechanical damage catches the eye, then everything is clear - the reason is in them.
Due to vibration during operation of the computer, SATA cables can simply fall out of the connectors. It is best to check the security of all cables.

Hello, I came to you with a problem. We decided to update the computer, but not all, but the main components: motherboard, RAM, video card and power supply, all this was successfully installed in our old case. And now the problem is, our BIOS is not in hard drive running and the drive, both IDE interface devices remained from the previous computer and we did not change them, the master at the service center connected both these drives to our new motherboard with one IDE cable, since there is only one IDE controller connector on the motherboard. We brought the system unit home and when you turn on the computer there is only a black screen, we go into the BIOS, there is an inscription: Primary IDE Master No detected and Primary IDE Slave No detected . We would go back to the service, but we do not live in the city. What can you think of?

BIOS does not see the hard drive

I come across a similar situation quite often, probably before your hard drive and drive were connected to the old motherboard, using separate cables, to two different IDE connectors, and both worked in the Master position, that is, Master. In the service, you simply connected two of your devices to one cable, but they forgot about the jumpers, now both of your devices are working in Master mode, because of this there is a conflict and as a result BIOS does not see the hard drive and the drive too.

In our article, we will work with a hard disk and an IDE interface drive, if you have little experience, about how to connect and disconnect and what errors you may have, read in more detail. If this article does not help you, try another one, in it described.

Where the computer was assembled for you, we hurried a little and now we will try to fix everything. IDE interface devices need to be configured with a jumper, it will then tell your computer how to properly access the drives (and the drive). When working with IDE devices, it is very important for a computer to know who is the master device on the same loop Master, and who is the slave Slave, this is decided by a small one. The contacts on which the jumper is mounted are located directly on the drive. Instructions for the location of the jumper are usually located on the drive case. We turn on the computer and go in, first of all, you need to make sure that the IDE controller is enabled in the Integrated Peripherals tab.

Make sure the power cables are connected.

In our article, we will set up jumpers first of all Seagate hard drive, then to gain experience Western Digital and Maxtor hard drive, Sony NEC Optiarc will act as a drive. Pay attention to screenshots. I also have a similar problem, the BIOS is not in hard drive running and drive, both devices are not detected Primary IDE Master No detected and Primary IDE Slave No detected.

From the very beginning, we look at how the jumper is mounted on the Sony NEC Optiarc drive. According to the instructions located on the case of the drive, the extreme right position is Master, which means that the drive is already connected with us by a jumper as the main one. It is best to connect the Master to the end of the loop.

Now let's move on to the hard drive, the Seagate hard drive is also connected as a Master, two main devices on the same cable is an inevitable conflict.

The result for both devices in the BIOS is No detected. Let's avoid device conflicts and leave our drive as Master and connect the Seagate hard drive as Slave. We look at the instructions and see that the Seagate hard drive works in slave mode without a jumper at all, remove the jumper altogether.

We look if everything is connected correctly and turn on the computer. The result is obvious, both devices were found and determined. Now we also connect the hard drive western digital, everything is perfectly defined in the BIOS. Behind it is a Maxtor hard drive, everything is fine too.

Many may notice, and if you connect the hard drive to the end of the cable and make it the Master-Master, and the drive in the middle and the slave-Slave, because the more important device is always connected to the connector at the end of the cable, if you want to do this, after all, the work of the hard drive is a priority for us. Then the main thing is not to bend the train itself too much, don’t be too smart, it will look like it’s on the screenshot.

Slows down the hard drive) no matter how you connect them. What about in our case? We look in the BIOS, the speed of our Sony NEC Optiarc -UDMA-4 DVD-rom, most likely the Seagate UDMA-5 hard drive, will work in UDMA-4.

Why am I doing this? But why, if you have a very old drive, it’s better not to connect it with one cable at all, since the speed of both devices will be very low, most likely PIO, so save up for a new one in this case.

When the computer is turned on, the BIOS checks its hardware for functionality. If the hard drive has physical damage, then the BIOS does not see it. Accordingly, a notification will appear on the monitor screen stating that the hard drive was not found.

Causes of the "hard drive not found" error

If the BIOS does not see the hard drive, the problem may lie in both a hardware failure and a software one. However, among the most common it is worth highlighting:

The hard drive is disabled in the BIOS;
The hard drive is damaged;
Winchester is not connected correctly;
The hard drive jumpers are set incorrectly.

Such reasons are typical for HDD drives. However, if you have an SDD, then to some extent the above tips will also apply to hard drives of this type.

Incorrect hard drive connection

If the BIOS does not see the hard drive, the problem may lie in the incorrect connection of the cables to the motherboard.

Open the side cover of the system unit and check all cables for connection.

IMPORTANT! If the SATA cable is 1 meter long, it must be replaced with a shorter one, as a longer length causes frequent OS crashes.

Setting up jumpers

If your PC has two hard drives installed and you are using the IDE interface, then the jumpers on the hard drive may not be set correctly. It is they who designate which disk is the "Leader" and which is the "Slave". Therefore, we look at the back side of the hard drive and look at the connection instructions.

It is also worth paying attention to the temperature regime of the hard drive. If it overheats, you need to adjust its cooling or put an additional cooler.

Checking the BIOS settings

Every PC component turns on and off. In the event of an abnormal system shutdown, changes to the BIOS settings can be made without the knowledge of the user. Therefore, if the BIOS does not see the hard drive, it is worth double-checking the settings of the first one. To do this, press "Del + F2" during the first seconds of restarting the PC. Go to the "Main" section and look at the "Sata Configuration" parameter. Its value should be "Enabled". If the value is different, click the arrows and select the desired one.

Some users sometimes encounter the fact that the system does not see the hard drive, not only connected as an additional device, but also an already installed hard drive, on which the operating system is intended to be loaded. What could be the reason for this and how to fix such a problem? The following are some basic solutions that should help in most cases. True, you first have to find out the true cause of the failure.

Why does the system not see the hard drive?

As the most common cause of such failures, most experts tend to call incorrect connection hard drive cables to the motherboard. However, even when correct connection a situation may arise when, for example, the system does not see new hard disk, although it is healthy, the operating system is in full working order, drivers are installed, etc.

This problem is most often associated with wrong settings BIOS (this will be discussed in more detail later). The same situation can be observed in the presence of software failures, when a character already used by the system is assigned to the connected device. Finally, the disk may contain errors, and if it is the hard drive from which the OS is started, it may be damaged boot records and sectors to be restored.

Physical Causes and How to Eliminate Them

Resolving the question of why the system does not see a SATA hard drive (we take this device standard only as an example), let's start by considering physical problems.

As it is already clear, you should first check the correct connection and tightness of the loops entering the corresponding connectors. In addition, a very common reason for incorrect HDD operation is overheating of the south bridge, which is more typical for laptops. In this case, first you need to turn off the device and let it cool down.

For stationary blocks possible solution problems may be the option of resetting the settings by removing the CMOS battery from the socket for a couple of minutes ( full reset parameters).

Along the way, you should find a special Clear CMOS jumper on the motherboard, which, as a rule, is located not far from the battery. The jumper must first be switched to position 2-3 for 15 seconds, and then return to the original connection 1-2.

It is also worth paying attention to the correctness of the Master / Slave connections (the position of the jumpers). A hard disk with an IDE interface must have a Master connection, all other devices, including external hard drives or optical disk drives, must have a Slave connection. This, by the way, also applies to situations where the system does not see the second hard drive. But this is far from all the problems.

The system does not see the hard drive: BIOS settings

Another reason that is not recognized is incorrectly set parameters of the BIOS primary I / O system. If during boot the system reports that system disk not found, and asks to insert it, perhaps another device is set in boot priority.

In the corresponding section, the HDD should be selected as the priority (first) device for booting. If after that the system does not see the hard drive, you should go to the hard drive settings section and disable AHCI mode in the SATA configuration settings line by setting RAID or Standard IDE as the used parameter.

Disk management section

But let's assume that the main hard drive is recognized and the OS boots without problems. The user connected a second hard drive, but there was no effect. So why does the system not see the external hard drive? There are many reasons for this, one of which is that the wrong letter has been assigned to the disk.

This situation is eliminated simply: we go into computer management, where we use a similar partition for disks. Absolutely all devices will be displayed here, even if they are not recognized at the initial stage of loading or do not work correctly. Choose desired disk, right-click to call the submenu and access the line for changing the letter or path to the disk. After that, we enter an unused value and save the set parameters. You may need to reboot.

Driver Issues

Another trouble for many users is missing or incorrect installed drivers responsible for the operation and installed on the motherboard, and external hard disk.

If the user has a driver disk, which must be included with the purchase, there is no problem. Just install (or reinstall) the drivers. If there is no such disk, you can use the free directory or install a program like driver booster, which, when scanned, will identify missing, corrupted or updated drivers and automatically integrate them into the system.

Checking the hard drive and boot record

Finally, the most unpleasant situation is when the operating system does not boot from the hard drive due to software errors or surface damage.

In the first case, you need any boot disk(for example, LiveCD or system distribution), after which you will need to press the "R" key to call and go to command line, where first with the command chkdsk c: / f / r check the disk for errors, and then write the lines Bootrec.exe / FixMbr and Bootrec.exe / FixBoot (this will fix the boot records). If this does not work, you need to rewrite boot sector using the command Bootrec.exe /RebuildBcd. If the problem was really related to such a situation, after the restart, the download will go in normal mode without failures.

In case of mechanical damage, the hard drive will have to be replaced. Although it is claimed that the restoration bad sectors can be done with the program HDD Regenerator by remagnetizing the disk, this is hard to believe.

Conclusion

Finally, it remains to be said that for cases where the system does not see far from all solutions, since it is simply impossible to foresee all situations. However, all of the above is most common, so depending on the situation, you can apply one or another technique that will eliminate the problem.

Here, problems were not deliberately considered when the hard drive is not detected by the system due to virus exposure (this also occurs), because protection own computer should be a priority for any user. Also, issues related to incorrect disk partitioning or formatting were not raised. Well, when the hard drive, as they say, began to “crumble”, there is simply no other solution than replacement.