The new laptop does not see the hard drive

Below is a small video guide, where all the steps that allow you to add a second disk to the system (turn it on in Explorer) described above are shown clearly and with some additional explanations.

Windows does not see the second hard drive

If after reinstalling Windows 7 or 8.1, as well as after updating them to Windows 10, your computer does not see the second hard drive or the second logical partition on the disk (drive D, conditionally), in this manual you will find two simple solutions to the problem, as well as a video guide to eliminate it. Also, the described methods should help if you installed a second hard drive or SSD, it is visible in BIOS (UEFI), but not visible in Windows Explorer.

If the second hard drive is not shown in the BIOS, but this happened after some action inside the computer or just after installing the second hard drive, then I recommend first of all to check if everything is connected correctly: How to connect a hard drive to a computer or laptop.

How to “enable” a second hard drive or SSD in Windows

All we need to fix the problem with a disk that is not visible is the built-in Disk Management utility, which is present in Windows 7, 8.1 and Windows 10.

To start it, press the Windows R keys on the keyboard (where Windows is the key with the corresponding logo), and in the Run window that appears, type diskmgmt.msc and then press Enter.

After a short initialization, the Disk Management window will open. In it, you should pay attention to the following things at the bottom of the window: are there any disks there, the information about which contains the following information.

  • “There is no data. Not initialized “(in case your physical HDD or SSD is not visible).
  • Are there areas on the hard disk that says “Not allocated” (in case you cannot see a partition on one physical disk).
  • If there is neither one nor the other, but instead you see a RAW partition (on a physical disk or a logical partition), as well as an NTFS or FAT32 partition, which is not displayed in Explorer and does not have a drive letter. just right-click on it on such a partition and select either “Format” (for RAW) or “Assign drive letter” (for an already formatted partition). If there was data on the disk, see How to recover a RAW disk.

In the first case, right-click on the disk name and select the “Initialize disk” menu item. In the window that appears after this, you must select the partition structure. GPT (GUID) or MBR (in Windows 7, this choice may not appear).

I recommend using MBR for Windows 7 and GPT for Windows 8.1 and Windows 10 (assuming they are installed on a modern computer). If you are not sure, choose MBR.

Upon completion of disk initialization, you will receive an “Not Allocated” area on it. ie. the second of the two above cases.

The next step for the first case and the only one for the second is to right-click on the unallocated area, select the “Create simple volume” menu item.

After that, all that remains is to follow the instructions of the volume creation wizard: assign a letter, select a file system (if in doubt, NTFS) and size.

As for the size. by default, a new disk or partition will take up all the free space. If you need to create several partitions on one disk, specify the size manually (less than the available free space), and then do the same with the remaining unallocated space.

After completing all these steps, the second disk will appear in Windows Explorer and will be usable.

Making the second disk visible using the command line

Note: The following command line method to fix the missing second disk is for informational purposes only. If the above methods did not help you, and at the same time you do not understand the essence of the commands below, it is better not to use them.

Also note that the above steps without changes are applicable for basic (non-dynamic or RAID disks) without extended partitions.

Run Command Prompt as administrator, then enter the following commands in order:

Remember the number of the disk that is not visible, or the number of the disk (hereinafter. N), the partition on which is not displayed in the explorer. Enter the command select disk N and press Enter.

In the first case, when the second physical disk is not visible, use the following commands (attention: the data will be deleted. If the disk is no longer displayed, but there was data on it, do not do the described, perhaps it is enough just to assign a drive letter or use programs to recover lost partitions ):

  • clean (cleans up the disk. Data will be lost.)
  • create partition primary (here you can also set the size = S parameter, specifying the size of the partition in megabytes if you need to make multiple partitions).
  • format fs = ntfs quick
  • assign letter = D (assign letter D).
  • exit

In the second case (there is an unallocated area on one hard disk that is not visible in the explorer), we use all the same commands, with the exception of clean (disk cleaning), as a result, the operation to create a partition will be performed exactly on the unallocated space of the selected physical disk.

Note: in the methods using the command line, I described only two basic, most likely options, but others are also possible, so do the described only if you understand and are confident in your actions, and also took care of the safety of the data. details about working with partitions using Diskpart can be found about Honor on the official Microsoft page Creating a partition or logical disk.

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Good evening. And the third column, (format fs = ntfs quick), will format the hard? And then an important infa on hard, and “Disk Management” writes. Not initialized Hard

Yes, that’s exactly the formatting.
Can’t you just initialize it? Right click on the drive name in the bottom left management. initialize.

Recovering data from a drive

It is not always possible to safely fix the problem with disks. If volumes have to be formatted, data is erased as a result. Before performing the procedure, you need to extract files from the defective media.

  • Use programs: Ontrack EasyRecovery, Recuva, Hetman Partition Recovery or Wondershare Data Recovery.
  • If you have configured recovery points on your computer, you can save your documents using the Lost Data Recovery feature. You need to open “Control Panel”. “Backup”.

Formatting reduces the likelihood of data recovery from drives. If the hard drive was damaged or unreadable, files may be saved.

Attention! The likelihood of data recovery on the disk will be higher if you turn off the TRIM function. which transfers and deletes data.

HDD preliminary diagnostics

Plugging in a new local drive can be a nuisance. If the computer cannot see the hard drive, the problem is in the HDD. Windows system.

Formatting with the Command Line

You can clean and format the drive through the “Command Line” (CMD).

  • In the “Start” call the context menu, find “Command line (administrator)”.
  • Enter the command “diskpart”. Enter.
  • Run “list disk”.
  • Enter “select disk x”, where x is the number of the desired disk.
  • Delete Content. Clean.
  • Create a new partition “create partition primary”.
  • Configure formatting in NTFS: “format fs = ntfs quick”
  • Give the section a name. “assign letter = G”. Letters do not match the name of other drives.
  • Exit Diskpart. Exit.

Disk management

  • Press Win R. in the line that opens, write “diskmgmt.msc”, click OK.
  • Right click (RMB).
  • Select “Initialize Disk”.
  • Check the desired drive, select the partition style, start the process.
  • If using Windows 10, GPT is fine.
  • Call the context menu, find “Create simple volume”.
  • Enter the size of the volume depending on how it is allocated. Selecting the maximum value will format all free space.
  • Assign a letter from A to Z. click Next.
  • Install NTFS format.
  • Formatting starts.

If the operation is successful, the drive status will change to “Connected”.

Note! If there are already files on the disk, everything will be lost during initialization. First, it is recommended to recover the media in another way.

Solving the problem during installation (the disk asks for drivers)

Sometimes Windows 10 does not see the hard drive during installation and asks for drivers. The search for the necessary computer software should start from the official website of the PC manufacturer. The utility has the words SATA or RAID in its name. If your searches are unsuccessful, you should enter the brand of your computer next to the driver name.

Note! To choose the correct driver, you need to look at the version and bitness of the operating system that is installed.

The external device control program must be transferred to a formatted USB flash drive. Specify as download source in the “Select drivers to install” section. The installation should continue normally. If the method does not work, you can write the image to the media using another program.

How to turn on hard drive on Windows 10

When reinstalling or updating programs, errors occur, the computer may not recognize one of the partitions or HDD. If Windows 10 does not see the hard drive, you can solve the problem yourself using the built-in system capabilities. Below are the main ways.

Physical media problem

  • Check HDD connection to computer.
  • Inspect contacts and jumpers, SATA cable. Oxidation, internal tears, and kinks prevent the computer from seeing the media. You need to properly operate the part, carefully inspect before buying.
  • If a cable break or damage is found, the ribbon must be replaced. The power connector should be close to the unit itself. It is advisable to remove the adapters.
  • You can determine the status of the hard drive by connecting to another PC. If the problem recurs, the part is faulty.

Note! Power off the computer by unplugging the power cord before adding a disk.

BIOS visibility check

The input and output system is the entry level that allows you to interact with the computer. When the operating system (OS) does not load or starts with errors, it is worth restarting the PC, pressing DEL or F2. BIOS or UEFI will open depending on the model. Information about drives is located in the Storage section. If the HDD is missing and is not displayed, the problems lie in the cable or the part itself.

The computer does not see the hard drive (not detected in BIOS or Windows)

At the moment, the hard disk is the most popular device for storing information. However, from time to time there are problems with it. One of the most famous problems. the computer does not see the hard drive. For one reason or another, it is not detected by the system, BIOS, or device. Let’s figure out why the computer does not read the hard drive and try to fix the situation.

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BIOS does not see the hard drive

Symptom: The HDD is not detected by the system (it is absent as a device), while the BIOS does not see the hard drive. The external indicator is on. Hard drive clicks or tries unsuccessfully to start up (you hear a spinning sound).

laptop, does, hard, drive

Diagnosis: one of the most common errors associated with HDD operation. The drive is probably out of order, or it is not properly connected to the computer’s motherboard.

Open the system unit (after unplugging it from the network!). Check if the power and SATA / IDE cables are securely connected to the hard drive. Better to play it safe and disconnect / reconnect the cables. Also check for damage on these cables, if they are tightly adjacent to the motherboard socket (in the case of SATA / IDE). Try connecting alternative cables if available.

If the hard drive clicks and is not detected, it is probably an electronics failure or a failure of the hard drive mechanics. Only the repair or warranty replacement of the hard drive will help. If there is no visible damage to the HDD or SSD and the warranty has not expired, feel free to contact your place of sale for a replacement hard drive. Unfortunately, you will lose all data on the disk.

PC (laptop) does not see the external hard drive

Symptom: the computer does not see the external hard drive when connected via USB or SATA.

Diagnosis: The USB ports may be faulty or the file system of the external HDD is incompatible with the operating system. The USB cable does not supply power.

Check if other devices, such as flash drives, are connected through this USB port. There is a possibility that the USB ports on the front panel of the computer are simply not connected to the motherboard. Also on laptops one of the ports may not work due to errors in the motherboard bridge.

Use the Disk Management panel to check if the disk is available and is defined as a mapped file space. You may need to format your hard drive to FAT / NTFS to work in Windows OS. If the external hard drive is still not detected, assign a different drive letter in the same section of the control panel.

Not all USB cables are suitable for connecting a hard drive to a computer. Some of them do not have enough power to operate the external drive. It is best to use the same cable that came with your external hard drive. In addition, you may need to share two USB ports for connection. Therefore, if the external hard drive does not work, carefully study the documentation that comes with the problematic storage device.

Windows operating system does not see the hard drive

Symptom: the Windows operating system (XP, 7-10) does not see the hard drive, it is not displayed in the explorer. At the same time, in BIOS and on other computers, the hard drive is successfully detected.

Diagnosis: the system may not see the hard drive because the drive is not assigned a letter or the file system format is not defined.

Right mouse button on Start. Disk Management (You can go here via Win R. diskmgmt.msc. Enter). In the context menu of the required disk, select the command “Change drive letter or path to disk”.

To format, select the Format command. Specify the volume label, file system format and click OK.

Question. Answer

I decided to replace my building with a new one. I bought a board, connected everything as it should, started it up, everything was fine for two days, but after a couple of days I turn on the PC. The PC does not see the hard drive. What I see: it turns out to me that the OS disk was not detected and the system offers to restart the system. I restart and everything is new. I went into the BIOS, there the sata port on which the disk with the OS is connected is not connected. I change ports (several times), changed sata cables, did not help, used a spare, zero result. The BIOS does not see the hard drive. I had to install the OS on a different disk.

I tried to update the sata drivers, updated the BIOS (I can not reset, there are no jumpers on the battery). Disk Management also does not see this disk. I do not know what to do. Sata ports are working properly, cables are also working. The HDD is powered on, it spins without unnecessary noise and crackles, but the hard drive is still not displayed.

Answer. Find out the specification of your motherboard and hard drive. Does the board support this sata standard? There may be a discrepancy between Sata of different versions. As a result. hard drive won’t open.

Check if the hard drive is detected on the previous motherboard or another PC. If the issue is not resolved. change the hard drive under warranty.

My hard drive (external) does not open, Windows writes: “The structure of the disk is damaged. Reading is impossible. ” I clicked on “Deep Scan Recovery”, but the problem disk is not here, it is present on my computer and I wrote what it was writing. Tell me what to do if the system does not see the external hard drive.

Answer. The PC does not see the external hard drive due to read errors. You can fix them using the standard chkdsk utility (Properties. Service. Check disk for file system errors). Go to Disk Management and check if Windows has detected the file system. If necessary, assign a different letter to the file volume or, as a last resort, format the HDD.

I have a 2TB HDD, I used to work with iMac. And now I connect it to a Windows laptop and this laptop does not see the hard drive. What can be done to save the information on the hard disk and make the laptop see it?

Answer. You can make a disk image using Acronis True Image and then carry out recovery operations with the image. Since the hard disk that previously worked in MacOS is not detected, it makes sense to check if this disk opens in this operating system (you need to test exactly devices with Mac OS with the ability to connect an HDD).

To read the HFS file system (standard for Mac OS) under Windows, use, for example, Paragon’s HFS for Windows® 11 program.

The WD10EALX hard drive stopped being detected by BIOS after the motherboard burned out. But when connected, you can hear how the engine starts to spin. It is necessary to reanimate the disk, preferably so that it can be detected (it is advisable not to erase the remaining data). Why the BIOS does not see the hard drive, how to fix it and how much will it cost to repair?

Answer. It is hardly possible to fix a mechanical breakdown of a hard drive. Firstly, this can only be done in special laboratories, and secondly, repairs will cost several hundred dollars. Alas, you cannot get data back from your hard drive.

Not so long ago I took from a friend an extra HDD for 500GB (WD Blue 500GB). When connected to my computer, I ran into the following problem: the hard drive is visible in the BIOS, but the BIOS defines it as 0MB. When trying to install the OS to the hard drive. the installer does not see it. If you start the OS from another hard drive, and leave this one connected. it is not visible even on the disk layout. What should I do if I do not see a hard drive in BIOS with the correct size?

Answer. To figure out why the computer does not see the hard drive, you must first check whether it is detected on a different configuration. If your friend’s HDD opens and the BIOS shows the correct information, the point is specifically in the configuration of your computer. Check the technical specifications of your computer’s motherboard to see if the connection protocol used by the hard drive supports.

If you connect the hard drive as a second storage device, conflicts are also possible. We advise you to disable the AHCI mode for SATA in the BIOS (see the SATA MODE parameter).

The hard disk slows down, that is, Windows does not boot from it, but the BIOS sees it. When trying to throw it to another PC, as an additional one, the same situation (PC hangs on the Windows logo) I tried to format it from a bootable USB flash drive in Party Magic, but it starts to see hard only after minutes. 20, but I’m generally silent about doing something with him. In fact, the hard drive does not work normally. Please tell me what could be the reason for such a glitch, how can you check?

Answer. We would advise you to use one of the utilities to check your hard drive for possible jambs and read errors: TestDisk or HDD Health (see above). It is likely that the operating system does not see the hard drive due to the presence of bad sectors. Also, as mentioned above, you can connect the HDD to another computer and check the hard disk for errors using standard Windows tools or the TestDisk application.

The laptop does not see the hard drive: instructions for solving the problem

According to the specialists of the service centers, the most common reason that the laptop does not see the hard drive is the physical damage to the hard drive itself. The fact is that it is a rather fragile structure that is not protected from mechanical stress.

It is enough to drop the laptop, even from a low height, as the hard drive breaks. At the same time, the screen matrix, motherboard and keyboard can continue to function normally.

Not only falling, but also strong vibration can cause malfunctions. For example. concussions while riding a train or electric train, with sudden braking of a car.

Ideally, it would be good to check the device’s performance by replacing it with a known working analog. Unfortunately, at home, such an opportunity is extremely rare.

The good news is that nowadays hard drives are produced in huge quantities and their market value is constantly decreasing. Therefore, purchasing a new hard drive will not make a dent in your budget. And technically, replacing a disk in a laptop is quite within the power of a user with average technical skills.

If the laptop does not see the hard drive, this may be due to overheating of the equipment. If the cooling air ducts are blocked when the laptop is unsuccessfully placed on a soft surface. Or if the computer is used lying on the couch, holding the laptop on your lap. all this can lead to a disruption in the cooling system.

Dust accumulated inside the case often leads to overheating of the laptop. Contamination occurs especially quickly in dusty rooms or when using a laptop in the open air, in parks, in the country, and so on.

If you have to use a computer in extreme conditions, it is advisable to purchase a device in a special version, protected from dust and shock. Although, such devices are significantly more expensive than conventional samples.

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If it overheats, you need to turn off the computer, let it cool down and try to turn it on again. If the malfunction repeats, then it is not a matter of cooling.

Settings problems

Often, events such as a sudden power outage lead to significant operational disruptions. In this case, the operating system shuts down in an abnormal mode and this leads to a failure in the settings of not only Windows, but also the BIOS.

  • If the laptop does not see the hard drive, most likely the operating system will not boot.
  • If the computer tries to start, tests will appear, it is possible to enter the CMOS settings, you must first see if the BIOS device is detected. It is possible that it was accidentally disabled at the BIOS level. Then you just need to change off to on.
  • The reason for invisibility may also be its incorrect configuration in the BIOS.

If this does not help, you need to try to reset the BIOS settings, then restart the computer. If the problem was with BIOS, the hard drive will appear and Windows will start loading.

For deeper violations, reinstalling the operating system can help solve the problem. In modern models, there is sometimes an option to return the system to factory settings. If not, use an installation DVD or bootable USB flash drive.

A bootable USB flash drive can also be created in advance using a special function and stored just in case, because the Windows boot disk may not be included with the laptop.

Sometimes the reason for the invisibility of the hard drive can be itself in the device manager. In this case, you must disconnect the hard drive connector. Then turn on the laptop and clear the device manager from all memory drives. Then reconnect the hard drive and wait until the system detects it itself. After that, you just need to confirm the connection of the new equipment. If after disconnecting and connecting the device is not found, it must be found forcibly by updating the shoe configuration.

Internal faults

The disappearance of the hard disk from the laptop system may be due to malfunctions of the motherboard. Most often this is due to the problems of the south or north bridge. A common malfunction of controllers is contact closure and burning. These problems can be found by disassembling the laptop and carefully examining the motherboard.

If nothing is spinning by ear in the hard drive, the heads probably stick. In this case, do not knock on the laptop, hoping that the sticking of heads will stop. All the same, even if the computer starts working, the malfunction will surely repeat soon and then the probability of losing valuable data will already arise. Better to replace the disk with a new one in time.

HDD power supply problems

The first step is to find out if Windows finds the connectable drive. Certain storage devices are connected only through a dedicated cable with additional power. Often, the HDD is not displayed in the operating system precisely due to the presence of problems with the power supply.

  • In this case, it is enough to change the power cable or plug it into a different outlet.
  • When connecting a removable hard drive to a computer or laptop, you need to make sure that the power indicator is working.

Solution version 2

Windows 10. How to Activate New Hard Drives and SSD’s Not Showing Up

It is impossible to use the second group of contacts of the used relay to discharge the capacitor, so you will have to add a second relay. By the way, these relays were used by me, they differ only in the resistance of the coil winding:

Briefly about the circuit: NC contact K2.2 discharges the capacitor C1 in the off state of the circuit. On power-up, K2.2 opens and K2.1 closes, which starts the old power-on delay circuit. The installation of the circuit in this case turned out to be denser, but still fits inside the adapter:

I isolate the circuit, assemble the adapter, install the hard drive, plug in, turn on the laptop. Disk startup is now accompanied by two quiet clicks of the relay with a delay of about 8 seconds. Restarting the laptop with power off occurs normally. Simple reboot leads to hang on diagnostics.

The cost of assembling this circuit will be about 250 rubles. Approximately 100 rubles. worth each relay. The rest of the details will either already be found in the bins, or will cost a few rubles apiece. Soldering the circuit with all the disassembly and assembly of the adapter will take about an hour. The circuit does not allow a normal reboot of the laptop, since it is tied exclusively to the 5V power supply circuit. But the circuit allows you to add another hard drive to a “capricious” laptop, and reboots are not so often needed. And yes I know very well about microcontrollers and field-effect transistors. This solution is provided as an example.

The computer does not see the new disk

It is logical that a “new disk” means a device that has just been purchased and connected to a computer for the first time.

If, in this case, the computer does not see the connected device, this does not mean that there are errors.

The first thing to check is whether the disk is formatted and whether a letter is assigned to it, for this:

  • Press the “WINR” key combination and execute the “diskmgmt.msc” command;
  • The new disk (if it is functional) will be accompanied by the status “Not allocated”, and this is what needs to be fixed by right-clicking on the unallocated area and selecting “Create simple volume”;
  • The “New Volume Wizard” window will appear, in which you should click on the “Next” button;
  • In the next step, select the required volume of the disk partition, if you plan to “split” it into several parts, or leave its full volume, and click on the “Next” button again;
  • Assign a drive letter, taking into account that the letter should not coincide with the already connected devices;
  • Activate the option “Format this volume as follows” and set the name, click “Next”;
  • It remains to click on the “Finish” button and check the performance of the created volume.

Another option, why the laptop does not recognize the new hard drive. it is not formatted

In this case, you will not even be able to change the name to something else. It is necessary to click on the disk again with the right mouse button, a menu will be displayed, and then click “Create volume”. However, be careful! This will delete all information from the HDD.

A not so common problem is the chip on the motherboard that is responsible for the operability of the USB ports. In 99% of cases, the solution to the problem is to repair the board.

Why does my computer not see an external hard drive when connected to USB

The main reasons why the computer does not see the external hard drive when connected to USB:

  • No drivers required;
  • Problems in the computer software;
  • Lack of power at the USB port;
  • Defective USB cable;
  • Defective hard drive;
  • Invalid volume label;
  • New device is not formatted.

These are the most common reasons why an external hard drive is not detected by Windows when connected via USB. Next, we will consider what you need to do to restore the removable disk to work on your computer, or at least diagnose the problem.

Lack of drivers is another most common reason

If the hard drive is not visible in either “Disk Management” or “My Computer”, but at the same time fully functions on other equipment, this is exactly the problem. Of course, modern Windows 7, 8, 10 are smart operating systems that search for and install drivers themselves in a fully automatic mode. However, sometimes they make mistakes.

In this situation, it is necessary:

Check the operation of USB ports (2.0 / 3.0). If other devices will work through them, then it is not at all about them.

If everything is ok with the USB ports, but the hard does not work:

We go to the Control Panel / Make sure that the item “Small icons” / Device Manager is selected in the “View” menu and select the sections “Other devices” and “Disk drives”.

There you can find out if the drivers for the connected media are installed.

If there are red or yellow identification icons next to the name of the connected device (see the screenshot above), it means that the drivers were not installed or installed with errors, in order to fix this, you must do one of the following options:

Click “Update hardware configuration”, after which the installation will take place in automatic mode.

Use a special program to install the necessary drivers “DriverPack Solution, Driver Booster or others”

After performing some simple steps, the HDD will work as usual.

The computer does not see a previously working (old) disk

If the problem was not resolved by the above option, or if there is no device connected in Disk Management:

  • If possible, check the operation of the disc on another device (computer, TV, etc.);
  • Check if the drive is receiving sufficient power. Especially often this problem is faced by the owners of external drives that were previously installed on computers, and later it was planned to use them as portable ones using an appropriate adapter.

And it is in it that most of the problems lie. For example, if the adapter is designed for 2.5 ” drives, then the power offered by it will not be enough for 3.5 ”.

  • Check if there is a conflict between the labels of the mapped disk and the existing volumes. Letters don’t have to match.

If so, return to “Disk Management”, select the required volume by right-clicking and select “Change drive letter or path to disk” and assign a new value.

  • Perhaps, for some reason, when the device was connected, the operating system could not install the drivers necessary for operation.

Check if this is so in the “Device Manager” and, if necessary, repeat the driver installation.

  • Change the (USB) port to which the drive is connected. For example, instead of a USB 3.0 port, use a USB 2.0 port, or vice versa;
  • Update drivers for partitions:
  • “IDE ATA / ATAPI Controllers”;
  • “USB Controllers”;
  • “Storage Controllers”.

Connecting via a different USB port

Often the external hard drive is not detected due to a faulty USB connector.

  • To check the correctness of this version, you need to connect the drive to a different port of your computer or laptop.
  • If the hard drive is connected via a USB hub, you should try connecting the drive directly to the USB port. The fact is that devices designed to increase the number of ports do not always have enough power to ensure the operation of an external drive.
  • If the computer does not see the external hard drive, you can test it on another PC.
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Mac won’t boot

If you have a more or less modern Mac, then it will most likely have one disk. And it is obvious that if there is a problem with it, the computer simply will not boot. In this case, you need to diagnose using the Apple Diagnostics application.

Shut down your Mac and disconnect all external devices except the monitor, keyboard, mouse or trackpad, Ethernet cable (if applicable), and AC power cord or adapter. Make sure the computer is on a level, stable and hard surface to ensure good ventilation.

Check if your Mac uses an Apple processor. look for your model in this list. Then proceed depending on the installed chip:

  • If you have an Apple processor: Turn on your Mac and continue to hold the power button until a window appears with a gear icon and it says Options. Then press the Command D keys on your keyboard.
  • If you have an Intel processor: turn on your Mac and immediately press and hold the D key on your keyboard until a progress bar or a prompt to select a language appears.

This will start the component diagnostics process. It takes a few minutes. When finished, the test results will appear on the screen, including help codes if any.

If during testing, disk problems are identified, you will have to contact the service. It is possible to carry out repairs on your own only on old models with HDD, and even then by replacing the disk with a new one.

Drive not showing on Windows

Make sure the hard drive is enabled in the BIOS settings. To do this, restart the computer and, as soon as the machine starts to turn on, press the F2 or Del key (the desired key is usually displayed on the screen) until you get into the BIOS.

Then find the section for disk management (Storage Configuration, Drive or with a similar name) and make sure that the required hard drive is activated. Opposite it should be the inscription Active, On or something similar. Save changes and reboot PC.

Check if Windows has prepared the disk correctly. First, open a command prompt window (Windows R keys), then enter diskmgmt.msc in it and press Enter. Carefully read all system warnings so as not to accidentally format the drive or change the data recorded on it.

If you see a disk without a volume label in the Disk Management menu, this may be the cause of the conflict. Then right-click on the disk and assign a letter to it using the appropriate option in the context menu. Then restart your computer.

If in the same menu you see a new disk with the signature “Not Initialized”, right-click on it, select “Initialize Disk” and follow the Windows prompts. After initialization, click on the disk again to open the context menu, select “Create Simple Volume” and proceed according to the instructions of the system. When finished, restart your PC.

Download the latest drivers for SATA drives from your motherboard or laptop manufacturer and install them.

Check your computer for malware with an antivirus.

Try reinstalling Windows after saving all important data.

If none of the above helps, contact the service center for help.

What to do if the computer does not see the internal hard drive

Tips for those who do not boot the device or the system does not display an additional disk.

Follow these steps in order. If the first does not help, go to the second and so on.

Disk not showing in BIOS

If you just connected the hard drive, check if you did it correctly. Find official instructions for your motherboard and hard drive on manufacturers’ websites and follow all recommendations.

If you are trying to install Windows XP or an older version and the system reports that there is no hard disk, make sure that the BIOS is enabled in the hard drive mode compatible with this OS. IDE. To do this, find the SATA operation setting in the BIOS (SATA Mode, SATA Configuration or with a similar name). Set IDE as value, save changes and restart your computer.

If possible, check the operation of the hard drive by connecting it to another PC. It will work. look for faults in the motherboard or other components of your computer. If not, you can take the hard drive to a service center.

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Drive not showing in Finder

If your Mac has multiple disks and the problem is not with the boot one, but with the auxiliary one, then the computer will boot, but the disk will be inaccessible. In this case, you need to check if it is displayed in the “Disk Utility”.

To do this, open the application from the Applications → Utilities folder or through Spotlight and check if the drive is visible. If so, you can try to format it (keep in mind that this will delete all data).

If your drive is not listed in Disk Utility, you should check if it is recognized by your Mac. To do this, you need to make sure that it is displayed in the “System Information”.

Click on the Apple logo in the upper left corner of the screen, select “About This Mac”.

Go to Storage or SATA / SATA Express. Check if the desired drive is available there.

If the disk does not appear, you can test using the Apple Diagnostics utility as described above, and if you find errors with the disk, contact the service for repair.

What to do when Windows 10 does not see the second hard drive

First you need to define a hard disk. A hard disk or “hard drive”, also known as HDD, is used to store data. All computer files are located here (there are only minor exceptions). It contains Windows 10, as well as all the information. Thus, if the hard drive is not displayed, information from it will also be unavailable.

HDD diagnostics

If the system does not detect the hard drive, then you need to determine the reason.

Find out: the problem is in the hard drive itself or in the operating system.

It is required to connect the hard drive to the system unit. If the device is successfully detected, there may be a problem in the software, otherwise a defect in the hard drive.

Working with software

If, after updating Windows 7 / 8.1 to Windows 10, the operating system stopped seeing the second hard drive, then below are the best actions to fix the problem. This instruction will also help if the user has installed an HDD or SSD in the system unit, but only the BIOS sees it, and does not display the operating system explorer. And if the BIOS does not show it, then you need to analyze the correctness of the hardware connection.

“Turn on” the second hard drive correctly

It is necessary, by pressing the R keys, to call the “Run” menu, type diskmgmt.msc. Then press Enter. The Windows 10 Disk Management utility will start. At the bottom of the window there will be an area where the disks are listed, study the following information about them:

  • “There is no data. Not initialized “- this will be written if the physical hard disk or SSD is not displayed;
  • Are there parts on the disk where “Not allocated” is written. this is if there is no partition on a virtually partitioned space;
  • In the absence of the above, the RAW partition and NTFS or FAT32 partitions are displayed, they are not visible in Windows and no volume letter is assigned. It is required to click on it with the right mouse button and click “Format” (if RAW) or “Assign letter”.
  • Right-click on the name of the area and click “Initialize”.

In the menu that appears, define the partition structure. MBR (in Windows 7), or GPT (GUID). For Windows 10, GPT is better.

Next, you need to right-click on the unallocated part, select the item “Create a simple volume”.

Follow the step-by-step instructions for creating a volume: choose a letter, determine the file system (NTFS is better) and the amount of gigabytes of space. If you do not specify how many gigabytes there will be, then it will take up all the unallocated space.

After completing the above steps, the second drive will appear in Windows 10, ready for use.

Using the command line to make the second disk visible

This option is provided for information only and is not recommended. If you do not have a positive result after completing the steps above and if you do not know the essence of the steps below, then it is strongly discouraged to use them.

It is required to display a command line with administrator privileges, then enter the following commands in sequence:

Write down on a sheet of paper or remember the number of the not displayed disk (hereinafter. X). Run the command select disk X by pressing the Enter key.

If the second hard drive is not visible, then use the following commands. Caution! Files will be erased! If you need to save files on a partition that is not displayed, you cannot perform the above actions. So, sequentially enter the commands in the console:

  • clean (removes all files);
  • create partition primary (it is possible to set size = S, the size of the area in MB, if multiple partitions are required);
  • format fs = ntfs quick
  • assign letter = D (prescribe. D).
  • Exit

complex operations can be performed using the command line, but it is recommended to use it only if you have the necessary knowledge in this area. Also, before doing this, you should save the necessary information in advance.

An alternative way to the built-in capabilities of Windows is to use special applications for recovering partitions.