What to do if your smartphone or tablet does not see the SD card. How does the problem manifest itself? Same section names

What to do if the phone does not see the memory card? Since I often get asked this and similar questions, I answered them all at once in this article. It will be useful to owners of cameras, Samsung, Lenovo phones, laptops - in general, all those devices that support a memory card and refuse to read the data on the card.

First, some technical details describing the problem. Let's say, as a result of some manipulations, a mobile device (phone, tablet, smartphone) stopped identifying a memory card (SD card) even through a card reader. All data is written to, bypassing the memory card itself. This is inconvenient because the SD card is not used, while the memory of the mobile device quickly fills up. Productivity decreases accordingly.

So, the problem is described in detail, let’s move on to diagnosing the phone, smartphone, tablet. Let's look at the most common reasons why phones don't see a memory card (flash drive) and how to fix this defect on your own using a card reader.

The phone does not see the SD card due to an incorrect file system format or a damaged file table

Cause of the problem. 1) The file table on the SD card was damaged and the markings were lost. 2) You formatted the memory card yourself, as a result of which the phone stopped seeing the flash drive. 3) SD card file system is unknown (used in another operating system)

How to fix. 1. Find out the size of your flash drive. If the microSD capacity is greater than 32 GB, it is most likely formatted in exFAT. Not all versions of Android support this file system.

2. A quick way to fix the problem is to reboot the phone in recovery mode and select the Wipe cache partition option in the Android service menu. This command will clear the contents of the SD card and format the media in the FAT32 file system - it is best suited for storing files on the phone.

Note. We would not advise inexperienced users to perform this procedure: if you mistakenly format the wrong partition, you will lose all the data on the phone, including files in the internal memory.

3. A safer (and more convenient) method of formatting an SD card is through a computer. You will need a card reader and SD Formatter software. It will help you format the flash drive properly.

4. You can try low-level formatting - however, not all manufacturers offer their own software for this (check the memory card website).

The memory card of the phone (tablet) has failed

Cause of the problem. As a result of mechanical / thermal damage incompatible with life, the phone stopped seeing the memory card or the SD card stopped working. Alternatively, the phone has stopped detecting the flash drive; on other devices the card is also unreadable.

What to do. Alas, nothing can be done with a damaged SD card. All you have to do is purchase a new SD card that is compatible in size and specifications with your smartphone or tablet. The most unpleasant moment is that all the data that was stored on the memory card of an Android or iOS phone is completely lost. You will no longer be able to restore them - neither by connecting your phone with a flash drive via USB, nor through a card reader.

If the flash drive is still under warranty and looks like new (no visible damage), try returning it to the store. If you're lucky, you'll get a brand new replacement card.

Check for bad blocks (bad sectors) via HDDScan

The problem is doubly unpleasant, because the phone was purchased a month ago. I decided to transfer some audio-video files from my old phone. The new smartphone is j7, and the old one is also Samsung Galaxy Grand Neo... The data transfer took place without any emergency situations.

About a week later I looked at the sd, and the card did not appear from my native “my files”. I looked through the xplore file explorer. All the folders were displayed there, but they turned out to be empty. But it’s important to add this: the phone’s memory also contained music and some video. So, they were displayed, but they were not “empty”, but refused to be reproduced - “reproduction error”. This never happened on an old phone with any sd and different ages, it certainly happened, but not this. And this recorded card can be read normally on the old phone, no problems.

For me, the main thing is, as you understand, the question is the phone, is that the reason? Such refusals to read in a month happened twice with internal memory, and four times with sidishna. Reboot - and everything is fine. But is this not at all the norm for a phone?

Answer. There may be several reasons for this behavior.

Perhaps the cause of the error lies in your method of copying files from internal memory to external memory. Try different methods and test: for example, through a card reader on a PC, through a file manager on a phone, etc. Do the described reading errors occur in all cases?

However, since you noted that there are no problems with other flash drives, then perhaps the problem is with the memory card. Who is the manufacturer, is the SD card compatible with your phone model? Read user reviews.

Third, update the software on your phone and.

Fourth - the SD Formatter utility. Try different file system formats.

1. Last chance to find an answer to my problem. The Samsung galaxy not 5 (china) phone uses only its internal memory, and the flash drive is not detected. What I didn’t do... I checked the boxes, and inserted it into another mobile phone, formatted it, and this and that - it doesn’t help.

2. On the phoneSamsung Galaxy A3 memory card does not workmicrosdvolume 16 GB. For almost six months it was on the phone; all photos from the camera were automatically saved on it. The memory card has not been removed since it was placed in the slot once. I've been using the phone for almost a year. Previously there was another card with a capacity of 8 GB.

R.SI moved the card to another phone - he doesn’t see it either. And the computer doesn't recognize it either. What to do? On the flash drive are all the children's photos and videos taken over six months.

Answer. If your smartphone or tablet does not see the flash drive, the problem may be with an application that does not save files where needed. Check in the settings where the files are saved - on an SD card, flash drive or in the internal memory of your tablet/smartphone. For example, in the Android Gallery settings you can change the storage location for photos.

Re-read the article. If all else fails, then perhaps the phone does not see the microSD memory card because it is faulty.

The phone does not detect the memory card. I transferred everything to internal memory. When the card is disconnected, all files are read, but when connected, they are not. Now, when you disconnect the SD card, the internal memory is also disabled and there is nowhere to save information. Tell me what can be done if the memory card is not readable (if possible).

Answer. Did the memory card work before this time? The phone may not support this card model.

If the SD card worked before, you may need to format your card - and it will be writable again.

The question is formulated incorrectly: you write that when you disconnect the memory card, the files are read, while you say below that the internal memory is turned off. So where are the files read from then?

1. The phone worked with a memory card. They sent me a congratulatory video. You delete it and it appears again. I tried to reflash the phone, but it didn't work. It didn't detect any updates. After some manipulations in the recovery menu, it became different, detected updates, downloaded and installed them. It shows its own firmware, but with a more recent date.

After this, the SD card is not detected. Android does not see it and does not detect its memory. And other sd too. Without a card, the phone sees its memory and works fine. What to do if the phone does not see the SD card after a virus?

2. I put an SD card in the computer - everything reads well there, you can see. And the phone displays the message: SECURE REMOVE CARD. Why doesn't my phone see the memory card? What to do?

Answer. If the phone does not see the memory card, this may be due to damage to the file table on it. How this is related to recovery is unclear. Try formatting the SD card. If nothing changes for the better, change the firmware.

1. I bought a 4G micro flash drive for my phone, installed it in my computer via a card reader, copied the files and installed it in my phone (Microsoft Lumia 530). After some time, I installed it again in the card reader and connected it to the computer. Windows issued a message that the device is faulty and does not read the flash drive, but everything works fine through the phone. And this happens with all USB media and devices. I checked flash on many computers before installing it on the phone - everything was OK. After installation, the memory card does not work on the computer - only through the phone.

2. I ordered a flash drive forebay(universal flash drivei- flash device). I received it yesterday, inserted it into my phone - it works, it also works on the computer. Today I tried to transfer a video from my phone to a flash drive, copying started, I left the phone and went away. Upon returning, I discovered that the program was closed, and the flash drive was no longer detected on the phone, nor was the computer detecting it. What to do?

3. I bought a 32 GB flash drive for my phone from AliExpress. It worked fine, then the photos that were saved to it were half cropped or there was a gray screen instead. Eventually it stopped being detected by the phone. The computer seems to detect it, but does not tear it off. It says something like "insert disk". I tried a lot of things that were written on the Internet, a lot of programs. Some don’t see the flash drive, some see it, but still can’t format it.Tell me how to bring her to her senses.

Answer. Format the flash drive using your phone or Recovery (we wrote about this at the beginning of the publication. If this does not help, go to Windows Disk Management and check whether the flash drive is mounted when connected to the PC, whether the volume is displayed in the list. If necessary, you can create a new partition on the flash drive and format in FAT or extFAT using specialized programs.

I turn on music on my phone, it says: no music files. Nokia RM-1035 phone and mirex micro sd (HC) class 4, everything worked yesterday. Probably the memory card is not readable! How to find out if it is working or not?

Answer. Check whether other mobile applications can see the contents of the memory card; to do this, you can install another player. Connect the microSD card to your computer or laptop via a card reader. If the flash drive is not accessible in both cases, try other methods described in the article.

The Samsung Galaxy A3 2015 phone does not read the flash drive. I formatted it in all possible formats, but it didn’t help. Connected it to a PC - everything works great. Why doesn't my phone see the flash drive? Maybe something needs to be changed in the phone settings?

Answer. Go to Settings - Memory. Check the "SD memory card" section. Install a file manager and see if the memory card files are displayed on it.

In addition to standard formatting, you can try low-level formatting - however, not all manufacturers offer their own software for this (check the memory card website).

Another reason why the phone does not see the SD card may be the lack of contact between the memory card and the phone. Check if your device reads other flash drives. If not, take the phone to be repaired.

Phone Doogee x5. The phone didn’t see the memory card, but it was there. Data was transferred to external memory by accident. For some reason the transfer was completed, but the card was still invisible. Pictures, videos, music have safely disappeared somewhere. How to get them back and why doesn’t the phone see the memory card? Is it possible to restore all this somehow? I tried Android Recovery - to no avail.

Answer. If the phone does not see the SD card, then how did you transfer the files to it? Perhaps you simply copied them to another location.

Try connecting the memory card via a card reader to your computer and scanning it with CardRecovery. As for Android Data Recovery, this program is less functional.

After disconnecting the SD card for work in aparted and carrying out manipulations in it, the prestigio phone does not turn on the SD card again. By the way, the laptop does not see the memory card either. Actions in recovery did not help. What to do if the phone does not see the memory card?

Answer. Perhaps the operating system and laptop see the SD card, but the markings have disappeared. You need to create a volume on unallocated space. Start – Run – diskmgmt.msc. Find the unallocated area and use the context menu to create a new volume on the SD card, assign a letter, apply formatting. After these manipulations, the SD card disk should be detected as before.

I connected the camera as in the instructions (via a USB port), but the camera reads it as a Portable device, but it needs a Removable disk. The camera does not see the memory card in connected mode or what is the problem? How can I change the display? Camera Nikon Coolpix S9400.

Answer. Your camera supports SD, SDHC and SDXC memory cards. The computer does not see the memory card as a drive. You need to remove the card from the camera and connect it to your PC via a card reader. If you have a card reader built into your laptop, connecting the card will be even easier. After that, you will see the removable drive in the list.

mico sd 32G in an Android tablet. I distort the connector - everything is ok, but after a while the conductor does not see it and through the setup menu, the SD card memory does not turn on. If you take out and insert a memory card, it appears. I cleaned the contacts, wiped them with rectification, but still Android does not see the SD card where the dog is buried?

Answer. Try testing another SD card with your phone. If the situation repeats and the smartphone does not see the flash drive (the memory card disappears from time to time), then most likely the problem is in the phone contacts.

If another memory card works without errors, we recommend formatting the problematic card in FAT32 or exFAT - in case the phone does not see the micro SD flash drive due to errors in the file table.

The phone (Samsung Galaxy S5) does not read the memory card. I inserted three cards, and none of them are read, although they are displayed correctly on other devices. In this case, the inscription “Connect SD card”, the font of which was previously gray, becomes white and clickable, but if you click, nothing happens. All photos and pictures in the gallery (located in the phone memory) are not displayed. And applications that are not in the internal memory, but in the phone memory, do not open. Tell me what to do?

Answer. There may be a failure at the level of the Android operating system or installed applications. Try to manually resolve the conflict by deleting all unnecessary applications from your phone. Update the OS version to the latest through the Android settings.

If the phone still doesn’t see the memory card, check the phone’s contacts: are there any visually noticeable damages on them?

Do you write "on other devices" when you mean a computer? If yes, it is likely that the file system of the flash drive is NTFS, and you need to format it to FAT or exFat.

When I insert an SD card into the phone, the device does not recognize it. No matter what I tried: even inserted it into other phones, I still can’t see or read its contents.

Answer. There is too little information about the memory card (virtually none) to give specific advice. First, check whether your phone supports SD cards of the size that is on your card (see the documentation for your smartphone or tablet). If you just bought a memory card, you can exchange it under warranty for another one of smaller capacity.

If you have previously used this memory card and it is no longer detected on this and other mobile devices, it is most likely faulty.

1. I cleaned the card on the computer. I deleted everything from it. Now there is a new smartphone teXet X-plus TM-5577. I inserted the Sidi card, he sees it, but nothing swings on the Sidi card and I can’t transfer anything to it. Tell me what to do?

2. The phone started to turn on on its own periodically (Lenovo A 526). Then I left the house and plugged in my headphones and noticed that not a single track was playing. Later, when I took out the phone, I discovered that the flash drive was not readable and the saved music did not play. I tried to reboot the phone - it doesn’t help, I put it in the card reader - it sees the memory card, I put it in a friend’s phone - too. But I don’t want it at all. And the most important thing that drives me crazy is the notification after turning on the phone with the phrase “Remove the MicroSD before deleting it so as not to lose data.

Answer. You need to connect the memory card to the computer again (as you did before), format the sd card in the standard way (for example, through Explorer) or using sdformatter. File system - FAT32. Most likely, it is due to incorrect formatting that the phone cannot write data to the memory card.

After a sudden shutdown, the tablet (Android 5.1) stopped normally recognizing memory cards in the card reader. It either writes, checking errors, or reads, which lasts indefinitely. At the same time, half of the programs stop responding, everything slows down wildly, and it becomes impossible to turn off the tablet (only when the discharge reaches 0 and turns it off). Sometimes (very rarely) after connecting, he sees it, but at the slightest manipulation with the card (even viewing a photo), he immediately loses it and begins to re-read it again, and this is the end. Tested on 3 flash drives, both clean and not, with different formatting and a lot of dancing with tambourines (all according to recommendations on the forums). A system rollback was performed. Nothing helped. He refuses to see the 8 gig card at all, although if you connect it via an adapter to the USB connector, everything works great (like other flash drives). What is the problem, in the card reader or in the system?

Answer. It is best to connect the problematic memory card to a laptop or, alternatively, via a USB adapter, as you mentioned. Next, the SD card needs to be formatted.

Most likely the issue is with the card reader. After a short time, many cheap card readers stop reading memory cards correctly and produce copying errors or read information slowly.

The system (Android) is unlikely to have anything to do with the problem, since you have already tested several memory cards. Perhaps it is a specific application that is slowing down the system, but this can only be determined by resetting the phone to factory settings.

Lenovo vibe shot phone, android 6. There is a 32gb sony sd card in the option as an extension of the main memory (ext4). The phone stopped seeing the file system - it says SdCard0 01/01/1970, 00 kb. Windows 7 sees two partitions - 16MB and 30GB, operational, 100% free each.

How can I return everything to its place by restoring the previous files? or at least how to pull out photos and the WhatsApp folder?

Answer. To recover a deleted partition on an SD card, R.saver or AOMEI Partition Assistant Standard Edition programs are suitable. If the file table on the partitions contains errors, you can try to fix them using the chkdsk utility for Windows. If that doesn't help, try scanning the SD card (unreadable sections) with the Recuva utility. Until you overwrite the information on the flash drive or format it, the chances of getting your files back remain high.

Samsung A3 2017 Samsung memory card 64 GB. I created folders from my computer: photos, ring notes, music, videos, movies, etc. The phone sees only audio, pictures, documents, video. Doesn't see any other folders on the memory card. What needs to be done?

Answer. Install any file manager for your phone (for example, Total Commander or ES Explorer). Create folders directly through these programs and copy everything you need there. Files should be read on the memory card without problems. It is also possible that those folders that cannot be read from the SD card are hidden or damaged. So it would be a good idea to format the card to avoid further errors.

Lenovo A2010 phone does not see the SD memory card. I tried to reboot, it says "Only one SD card is available, it is impossible to switch." Other phones do not have a card. It doesn’t show on the computer through the card reader at all. Is this really the end, so many photos and videos have disappeared? Maybe something can be done?

Answer. It looks like there are reading errors on the card or the markings have come off. Since the memory card does not open on the computer (i.e. the letter/separate drive is not displayed in the file manager), it makes sense to check whether the memory card is recognized as a device at all. To do this, go to diskmgmt.msc (Start - Run) and see if unallocated space appears when you connect the SD card to the PC. If it appears, create a new file volume in this space through the context menu. If nothing happens, most likely the SD card has failed.

Phone model sony xperia m4 aqua dual. For two years, the phone had a microSD memory card installed. Recently, glitches began to occur: at first, in order for the memory card to work, it was enough to restart the phone. Now the phone has stopped seeing the map completely. Failed to format. Installed a new one. The phone recognizes it (it’s in the settings, photos were sent to the card), but applications cannot be downloaded from the play store (it still shows the option to download only to the phone’s memory). What needs to be done in this situation with a flash drive?

Answer. Format the memory card with specialized applications - the same SDFortatter is quite suitable. Next, check the card for errors using the chkdsk tool.

However, you clarified that changing the memory card does not help. The problem may be caused by specific applications or software conflicts within the Android OS. In this case, we recommend updating the firmware or, as a last resort, resetting the phone (perform a hard reset).

After encrypting the SD card, Samsung A5 2017 stopped seeing it. Through the card reader on the computer it sees, but does not open. I tried to format (SDFormatter, cmd) - it doesn’t work. Sees other flash drives. I checked for errors - it gives an error, but does not correct it.

Answer. To check the SD card, use the following parameters:

chkdsk (drive letter): /f/r

• /f - fix file system reading errors
• /r - fix bad sectors on the sd card

This should fix errors and allow you to format the SD card in the standard way or through utilities like SDFormatter.

I have a Kingston DTSE3 16G USB drive, the computer doesn’t see it, the flash drive is unreadable. periodically the system displays a message stating that the device can work faster or. Are there any recovery programs?

Answer. The flash drive supports USB 2.0 interface. Your computer (motherboard) may have an older version of the ports, which is why this message appears. Therefore, we advise you to update your PC hardware if you have not done so for a long time.

Recovery programs will not help you, but formatting the flash drive correctly (in NTFS/FAT) and then checking for errors using chkdsk will not hurt.

The Samsung galaxy tab 4 SM-T331 tablet does not see the SD card. available places 0b, free 0b. and I inserted the same SD card into another device, into my phone, and sees the SD card: available 14.57 free 14.57. I insert another SD card into the tablet - again it doesn’t see it, but the phone sees it.

Answer. If there are important files on the memory card, make a copy of them on your computer. After that, format the memory card and check it for errors. If everything is in order, you can use the SD card on your tablet or phone and write files to it. If the situation repeats, update the tablet firmware or perform a hard reset. However, this is already an extreme measure; we advise you to first deal with reading errors.

I made the memory card an internal storage device forZTE blade A510. After resetting the phone (SDthe card was in the phone all this time) it stopped working on all devices, Android does not save to it.

Answer . You need to format and mount againmicroSDas an internal storage. If the memory card is opened on a computer, transfer all the data on it to your hard drive.

I have a Samsung Galaxy S4 NEO.I bought a 16 gig memory card, but after 5 months of use it suddenly stopped seeing all the games that were on it. And the phone sees videos, photos and everything else without any problems. In settings > memory > memory card, the total volume, free space is written - in general, everything is as usual. Help with this problem!

Answer . The easiest way is to reinstall the games. This can be done through the applicationGoogle Play. If user data is still stored in the phone memory or onSD-map, games will work as before.If not, try restoring them through the appropriate recovery applications.

Some smartphones do not have a memory card slot. As a rule, we are talking about flagship devices, where, according to the creators, there is no room for a flash drive. Still, most smartphones support a memory card. This is good, you say, and you will be right. But sometimes the device may not see this same memory card. Why and what to do in this case?

Restarting the device

The first step is to restart your device. For what? If your phone or tablet uses a tray where a micro SD card is inserted, that is, the procedure does not require rebooting the device, this problem can be attributed to the most common failure. Therefore, the first thing you need to do is reboot the device.

The problem is with the contacts

If you have another device at hand, be sure to insert the memory card into it and look at the result.

Format the card

But often everything is much simpler and the problem is related to formatting. You need to format the micro SD card. To do this, insert it into the card reader and connect it to the computer. When the card appears in the list, right-click on it and select Format.

In the new window, select the FAT32 file system and click on the “Start” button.

Unfortunately, this will delete all your data, so we highly recommend moving it to another location if you need it.

After formatting, insert the memory card back into the device.

Another option is to format the card on your phone (if possible). Please note that in this case all data will be deleted.

Go to the "Memory" section.

Then select "Empty SD Card".

Confirm the action if you agree.

The memory card will be formatted.

The problem is in the phone

If the card works on other devices (for example, the computer sees it), but does not work on one device, then the problem may be related to the device itself. For example, something was damaged when the phone fell. In this case, the only thing that needs to be done is to repair the device, having previously diagnosed it.

Memory card problem

This makes it even easier. We insert the micro SD card into other devices and check its functionality. If it shows no signs of life or shows errors, it may have reached the end of its life cycle. And the only thing that remains is to try to “get” important files from it, if there are any on the card.

Incompatibility of the memory card with the phone

It could also be that the memory card is incompatible with the phone. Such cases are rare, but still occur, if you believe the reviews. In case of incompatibility, the phone simply cannot read information from the card. There is only one way out - replace the memory card.

You can ask your questions using comments.

Portable storage media made a splash in the computer equipment market - with their advent, transferring data was not difficult. At one time, floppy disks had, although small, a sufficient amount of memory for storing text documents, raster images and tables inside. They were replaced by optical disks - a product that is an order of magnitude more expensive than floppy disks, but with a larger memory capacity. At the same time, a new era in multimedia was born - cassette recorders replaced players. There were also disks that could be rewritten like old floppy disks. And it seemed that everyone had enough of everything and discs took their place in the industry, but progress did not stand still.

The person wanted to reduce the size of the disk and increase the amount of memory on it, and the disk also did not have much strength. And then the era of flash drives arrived. It was hard to imagine that a small piece of plastic could store as much information as a disk, while the size of this piece was tens of times smaller.

A flash drive is a portable memory storage device, like a hard drive, and is connected using a USB port. But sometimes it happens that the computer, for some reason, does not see it. What to do in such situations? Let's figure out how to restore a micro SD flash drive if the computer doesn't see it?

Mechanical damage

First you need to find out if it has any mechanical damage. The small size of the drive, in this case, plays a cruel joke on the owner, since the flash drive does not have standard type chips. Accordingly, the slightest intervention will lead to a non-working state. In other cases, special utilities will help us.

Formatting a flash drive

Go ahead. The easiest way to “revive” a flash drive for a computer is to format it on another device, be it a phone, tablet or camera. With a high degree of probability, after this the computer will be able to recognize it.

No drivers

If this doesn’t help, it’s possible that your computer doesn’t have the necessary drivers to read this drive model. Even the newest computers and laptops cannot boast of having the latest drivers. So open the browser and look for special programs for automatic updating. If you want to figure it out yourself, follow the section “My Computer”, then “System Properties”, then select “Device Manager”. Select the name of your flash drive from the list, right-click on it and select “Update Driver”. Updating USB drivers may also help.

Conclusion

If you were unable to restore the SD card and the computer still does not see it, it is better to contact a specialist. And be sure to watch this video on flash card recovery.

A memory card (not to be confused with a flash drive) is the most common storage medium. It has long eclipsed CD and DVD media, and the popularity of the drive is only growing. Engineers manage to endow a small piece of plastic with such an impressive amount of memory that soon even the need for bulky HDDs will disappear.

Today standard cards SD, SDHC And SDXC used in the following gadgets:

• smartphones;
• tablets;
• cameras;
• cameras;
• readers;
• VR glasses;
• players and more.

But sometimes incidents occur during operation: the computer does not see a memory card that has just been removed from a device, although it previously worked properly. What is the reason? Let's try to figure it out.

Types and standards of drives

First, let's look at the purpose and specifications of the cards, and also consider the dimensions. There are currently 3 different standards on the market:

• miniSD;
• microSD

What is this gradation for? It all depends on the speed of reading and processing data by the drive itself. Let's say a mobile phone or smartphone, as well as a portable player, does not need high memory performance. Here the main criterion is the minimum size of the flash drive (the term is not entirely correct, but familiar to the average person).

MicroSD

Cards of this form factor are popular among developers of portable electronic devices. Dimensions of 11x15 mm allow the memory to be used in any device. A small piece of PCB can significantly expand the total memory pool of any device up to 128 GB (or even 256, if the device supports such capacity).

MiniSD

This standard has long lost its former popularity, but is also used in portable electronics. It was pushed out of the market by a “competitor” in the form of microSD. The dimensions are 21.5x20 mm.

SD

Cards of this type with dimensions of 32x24 mm are used in the dominant part of devices that require a large amount of external fast memory. Main scope of application:

• video cameras;
• registrars;
• professional and consumer photographic equipment.

Such cards have several generations, characterizing the maximum amount of stored information and speed when reading/writing:

• SD 1.0 – 8 MB – 2 GB (almost never used);
• SD 1.1 – up to 4 GB;
• SDHC – up to 32 GB;
• SDXC – up to 2 TB.

Other important selection characteristics

Volume isn't everything. There is also “class” - the minimum speed of reading and writing information. Now the most common type is “class 10”, i.e. data exchange speed of at least 10 MB/s. If you record video in 4K resolution, then purchasing “class 6” and even more so “class 4” is simply useless - the delays will be enormous.

The second point is adapters and adapters. You can insert microSD into a special SD adapter (may be included) and use such memory in everyday life, but the speed delay will immediately come back to haunt you.

Since the basics have been studied, we will figure out why the computer does not see the memory card. Consider the following reasons:

• compatibility;
• incorrect volume letter;
• drivers.

Compatibility issues

All card readers, whether built into the PC or laptop case, or an external device operating via USB, are backward compatible. In other words, if it is designed to read data from SDHC cards, it will work with SD 1.0/1.1 without any problems. But you won’t be able to “make friends” with SDXC - the technology is different, although the card looks identical to the others.

The problem is solved quite simply. It is enough to have at least one working connector in use USB 3.0(version 2.0 does not have enough speed) and an external card reader, which is sold in any electronics store for a penny price.

Drive letter conflict

An SD card is the same disk, only solid-state. It is detected by the system like a HDD, SSD and DVD drive, i.e. receives its “letter”. Often registration is automatic and you won’t even notice it. The problem can occur in two cases:

• 26 logical devices are connected to the PC (the number of letters of the alphabet);
• The system refuses to register the drive on its own.

In the first case, you will have to disconnect at least one disk/drive/flash drive; there are no other solutions. In the second, everything is a little more complicated, but fixable. If you are sure that the card is fully functional and visible on other devices, but is not displayed on the working machine, do the following. Press the Win+R combination and enter the command “ diskmgmt.msc»

We get to the Disk Management Manager. All drives and other “letter” devices will be displayed here. It is typical that you will not see A and B, since these letters are reserved for Floppy drives. Even those units that are not formatted and not recognized by the system will be shown. Have you found your card (which it is advisable to rename first)? We do the following:

We change the letter to a unique one by right-clicking on the device and selecting the desired item in the context menu.

We format the card if it is new or does not contain any important data. If there is important information, dump it on a PC/laptop that can read the information. Formatting removes absolutely everything from the surface - remember this.

Don't forget to change the file system to NTFS (reads files larger than 4 GB) and rename the disk itself (this makes it easier to recognize).

Drivers

Another popular problem that is also being solved. Most often, it affects new equipment that was just purchased in a store, or you installed a new version of Windows, but did not install all the components. Often the kit includes an installation disk with all drivers and utilities. What should you do if you didn’t put it in, or if there is no disk drive at all?

In this case, look at the name of your motherboard (PC) or laptop model. In the first case, we go to the website of the “mother” manufacturer and select the software necessary for our OS. In the second case, we do the same, but on the laptop manufacturer’s portal.

The second option is to open the device manager using Win + R and write “ devmgmt.msc».

We look for “USB controllers” and see a yellow warning triangle saying that the drivers are not installed. We update and use it. If the card reader is external, try looking for a driver for it - this can also solve the situation.

But if nothing saves you, then the time for the card has come.