How to recover corrupted SD card, An SD card, like any other storage device, can fail completely suddenly, disappointing its user at the most unexpected moment. Of course, the data they contain is often much more valuable than it appears at first glance. They can be photos of loved ones with loved ones, personal notes or just our favorite music. Regardless of the type of lost files, most of the users always strive to recover the lost files.What is an SD card?, Symptoms of a corrupted SD card?, Possible errors on an SD memory card?, How to restore an external SD card?, How to update your SD card driver?, How to update your SD card driver?, How to solve the SD card problem?, How to recover data on SD cards?, How to retrieve the card Hardware?, Recovery method Hetman FAT Recovery?.
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What is an SD card?
An SD memory card (short for Secure Digital Memory Card) is a small mass storage device intended for the repeated writing, storing and reading of various digital information. Memory cards are mainly used with portable electronic devices such as smartphones, digital cameras, e-books, GPS navigators, some types of game consoles, etc.
Smartphone owners often run out of storage space. Solve the problem of Micro SD card. External media can easily be installed on a smartphone, have a slot, and expand the storage by several gigabytes, or even a terabyte. However, errors appear in the operation of the flash drive.
Memory SDscard are used in many electronic devices, mobile phones, tablets, cameras, image / sound recorders to store our data.
Depending on the type of memory card that the manufacturer has used in this device, we can distinguish many types, the most popular being microSD, SD (Secure Digital), CF (CompactFlash).
Memory card damage often occurs when you move it from one device to another, such as a phone to a card reader.
There are also situations where damage occurs to the device itself. It's just that the card suddenly stops working and is not visible through the device.
The SD memory card has standard dimensions of 24 × 32 × 2.1 mm which gives enough space to place its own controller and memory chips in charge of writing and storing user data; The chips use the principles of flash memory based on special programmable semiconductor technology.
How SD cards were developed
As the cards were developed, the amount of onboard memory increased and, for today, it can be up to 128TB. Memory cards based on data processing speed, shown by digital symbols on them. The unified standard classification of approved speed specifications for memory cards is known as the Speed Class and represents the speed of writing data to the card.
SD memory cards use the FAT file system: for volumes up to and including 2 GB - FAT16, 2 to 32 GB inclusive - FAT32, and more than 32 GB - the exFAT file system.
However, any card can be formatted in a different file system at the user's choice, for example, NTFS. However, using this particular system is not recommended because memory cards have a limited number of write cycles and the journal file system such as NTFS constantly checks the card and keeps the record of card changes, which can increase the process of memory drain. In the end, this circumstance can reduce its expected lifespan.
Symptoms of a corrupted SD card?
When certain warning signs appear, you can understand that the memory card is damaged and needs repair or repair. Very often, it is just the terrible fact that you have to face. However, as soon as you detect the alarm signal, you can stop using the card immediately to avoid further data loss or to avoid the mistake of saving data without a single chance to access it later.
Such warnings include the following:
A.- Data (eg, photos, videos, etc.) stored on the memory card cannot be opened, is displayed only partially or with an error warning, or cannot be read at all.
B.- The device that uses the memory card shows warning messages that it cannot write anything to the card.
C .- When the operating system goes to the memory card, there is a warning that it must be formatted to allow its later use.
D.- Operating system warnings about reading errors or sudden freezing of the computer when the memory card is connected.
Any of the above symptoms indicates a problem with the SD memory card that you should pay attention to.
Any signs that the chances of possible memory card damage are very high should prompt you to respond to the problem immediately and start thinking about saving the data in a more secure location or transferring it to a storage device data to work properly. To avoid the loss of data stored on an SD memory card, you should make it a rule to save it regularly to another storage device to avoid unexpected loss.
The best thing to do is transfer your files to another data storage device immediately after creating them.
If you use an SD memory card on your smartphone, most devices can backup contacts, photos, and videos to cloud storage; In case of any problem, just log in to your cloud to find all your data safe and sound.
Possible errors on an SD memory card?
The main elements of the daily flow of data that users exchange when communicating is represented by images and photographs. Any pleasant memories, funny images, photos of your relatives and close friends, professional photographs of work moments and many other fields are only the few cases where we come across images. If the memory card breaks down at a certain point and the data stored there disappears, there is even a risk of panic, especially if this information existed in a single copy.
However, if you know the possible causes that can trigger memory card errors, you can prepare for the worst case scenario and protect your data, or use specific recovery methods.
All possible causes can generally be divided into two categories:
Hardware damage and Software errors
Hardware damage to an SD memory card. Mechanical damage can include a variety of cases, but we list the most common below:
A.- If your problem is a broken casing, a malfunctioning lock switch, or bad contacts, you can try to fix it at home if you have enough knowledge and skills. At the very least, you'll have to replace the card case, and as for the connector contact problem, cleaning the contacts with some kind of technical liquid (like alcohol) will do the job in most cases. If the problem is more serious, you may need to re-solder the connectors.
For example, there may be cracks and crevices in the card case, the lock switch no longer works properly, the connector contacts wear out, etc., which makes the card remain unreadable even when it is already connected.
B.- If it is the controller failure, you will need to use special software designed for each particular type of controller. There are many programs on the Internet to help you identify the manufacturer and model of the controller with software-based methods; Knowing this information, you can use additional utilities to repair the memory card by modifying its firmware. However, firmware options are not available for each and every type of controller, so be prepared to face the situation when there is no firmware for your particular model.
C.- Limited writing of memory cells: the technical peculiarities of a flash memory device cause certain irreversible changes in its structure and result in the flash memory cells having a limited number of write cycles. The write resource differs depending on the type of memory and the technological solutions implemented in a specific device. As the write cycle limit approaches, memory begins to degrade and this process can manifest itself in memory cards becoming unreadable or inaccessible.
D.- The SD card slot of your mobile phone or card reader does not work: these cases are quite rare, but they do happen. Your memory card may be in good condition, but the memory card slot on your device may be causing problems. Connect the card to another device that you know is in perfect working order and check if the card is working properly. In some cases, this is the only operation you need to make sure that the memory card is not the item that is actually causing the problem.
If you do not have sufficient knowledge to carry out repair work, or you are afraid of causing further damage to the memory card and all its data, or you could not repair the mechanical damage on your own, you can always contact a specialized laboratory. deal with storage media repair and data recovery.
Professional laboratories possess expensive equipment necessary to repair memory cards and restore information, sterile facilities that exclude foreign particles from coming into contact with electronic parts, and, of course, highly qualified specialists.
However, this method of troubleshooting memory card has several major disadvantages: repairing a memory card is not always possible, laboratory specialists cannot guarantee complete recovery of your data, and the final cost of their services may be really high. Even if the data was not recovered, you will have to pay for each service they have provided.
Software problems on SD cards
In addition to mechanical factors that can damage SD memory cards, there can also be other problems:
A.- SD card file allocation error: file system errors make it impossible to use the SD card and the operating system tells you that the card must be formatted. This type of card damage can be fixed by restoring from backups and using tools built into the system to verify and repair disks. In the recovery part below, we will tell you how to restore your data if you encountered this problem.
B.- Operating system errors: in some cases, the internal management processes of the computer device can cause errors that affect the reliability of a memory card and can make it unreadable.
C.- Incompatible file system: the interaction between the obsolete file system of an SD memory card and some modern applications that may not be fully compatible can cause errors and subsequent damage to the memory card.
D.- Early interruption of the data transfer process: if the process of copying or cutting files from a memory card to a computer is interrupted (for example, by a power cut, forced removal of the memory card, etc. ), there are high chances that the SD card will be damaged.
E.- Unsafe SD Card Removal: When you ignore the safe way to remove an SD memory card from a computer or other device, there is an increasing risk of damaging the data and the SD card itself.
With Windows operating system options
In Windows operating system, you can find a powerful built-in utility to fix file system errors and identify bad sectors, known as CHKDSK.
When the corresponding commands are used, the CHKDSK utility will check the partition or user-defined storage device for errors and attempt to fix it, looking for physically bad sectors and marking them as bad to prevent the operating system from writing data to those sectors .
You can open CHKDSK in a number of ways, but the simplest is to start the utility with the Run tool. Press the Windows + R key sequence and open the window. On the Run line, type the command:
CHKDSK [volume name] / f / r
With data recovery software.
If the data on the memory card is important and you are interested in saving it, then recover the files from the memory card with specialized data recovery software before starting to format.
Most memory cards have a FAT file system of various types (such as FAT32, exFAT, etc.). That is why the reasonable decision will be to use specialized tools for file recovery.
On the international information network, the Internet, you can find a wide variety of programs from various developers, but the most popular so far is Hetman FAT Recovery from Hetman Software. This is a shareware application that allows the user to test its functional functions and fully recover their data before purchasing the license key.
How to restore an external SD card?
If a USB flash drive purchased for an Android smartphone doesn't work. This is a common error and occurs first after several months of using the memory card. Of course, it happens that a Micro SD drive has been working for 2-3 years, but even in this case, malfunctions cannot be ruled out.
The most frequent cause of problems with an SD flash drive are usually files that take up free space. Some of them are corrupted by viruses that slow down the performance of external storage.
The most common solution to the problem is to format the memory card. It almost always helps, although all files will be deleted.
But is it possible to recover a corrupted SD card without losing data on the drive? Yes but not always. for In order to get rid of errors while reading the drive without losing files, you should consider all possible solutions to the problem.
To restore drive performance, you will need:
1.- Computer (laptop) with memory card slot.
2.- A microSD adapter that works (usually comes with a USB flash drive). for
3.- Card reader in case the SD port does not work on the computer.
How to update your SD card driver?
First you need to make sure is the relevance of the driver installed on your SD card. The installed driver is an important link in the operation of all the devices on your computer, so if it is outdated or damaged, it can have some negative consequences.
How to update the SD Card driver
1.- Connect your SD card to a USB port on your computer.
2.- Open Device Manager. The easiest way to open it is to go to Properties of the My Computer icon and select the Device Manager option located in the menu on the left.
3.- In the list that appears, look for USB Drives and expand the menu. Find their discs and cards. In our case, it is an SDHC card.
4.- Right click on the name of the SD card and press the Remove device button.
Warning! Don't be alarmed that the device name disappears from the list of drives. It should be like that. This indicates that you have removed the existing driver.
5.- Right-click on the Disk drives option and select Update hardware configuration
6.- Once the process is completed, your disk will appear again in the list of devices and will be suitable for later use.
Disk management method
This method of solving the problem does not offer complex routes with the need to update the software or enter a long list of incomprehensible commands. However, it is simple and effective to use.
1.- Connect your SD card to your computer.
2.- Open the Run utility with the shortcut keys Win + Enter the command diskmgmt.msc.
3.- You will see the Disk Management window, which will make your SD card appear in the list of installed devices.
In the same window, if you wish, you can open the contents of the card simply by clicking on its letter with the right mouse button.
How to remove malware from SD Card
Viruses can easily block the functions of the SD card, it is used in the cause of most of the errors in our devices. To solve the problem in which the SD card still does not want to "come out", in this method we will see how to eliminate the virus that causes it.
1.- Connect your SD card to your computer.
2.- Open the Start menu and run the command prompt as administrator.
3.- In the window that opens, enter the command attrib -h -r -s / s / d F: \ *. *
Replace F: with your drive letter. It can be G: or whatever, don't forget to check your browser.
How to solve the SD card problem?
Recovering from an SD card requires careful attention to the process and following step-by-step instructions. By following the steps exactly, you can solve the problem without losing your files.
A.- CHKDSK System Repair
This solution to the problem is suitable in cases where, when trying to install a USB flash drive in a computer, a message appears on the screen: "SD card is damaged." Indicates that there is a problem with the drive's file system. In this case, it is too late to determine the cause of the error. for We need to start taking stronger measures.
A standard Windows tool will help you troubleshoot.
1.- Connect an SD flash drive to a Windows computer in a USB port.
2.- Click on the "My Computer" shortcut located on the desktop.
3.- Find the SD card in the list and remember the drive letter (D, E, F, G,). for
4.- Press the Win + R buttons on the keyboard. for
5.- Enter the command "CMD" and confirm the action. for
6.- Enter the command "chkdsk D: / f" to scan the medium, where D: is the name of the drive where the microSD card is, and press "Enter".
After scanning, the operating system will look for errors and, if possible, correct them. When the process is finished, you should check the performance of the unit on your mobile phone. If problems persist, you will need to proceed to the next troubleshooting method.
B.- Format a damaged SD card If fixing CHKDSK errors in SD card file system doesn't help, you will have to completely format USB flash drive. This process will all the deleted files stored in the medium. The method is radical, but there is no way to restore access to the media.
How to format a card:
1.- Connect the USB flash drive to your PC. for
2.- Find it in the device list and click the right mouse button. for
3.- Select the "Format" section. Specify "FAT32" as the file system.
4.- In the format properties, check the box next to "Fast". Press the "Start" button.
If the flash drive does not respond in this way, you must repeat the operation by unchecking the box next to the "Quick Format" item. A formatted SD card can be inserted into a smartphone to check it out
C.- Remove partitions and reformat
Another way to solve your USD card problem, it is used when the drive cannot be formatted in the standard way. for
1.- Deleting all sections is a low level formatting. for
2.- It also deletes all the files that are present in the USB memory. for
However, this debugging option is the most efficient.
D.- Remove all partitions and reformat
Another way to solve the problem is used when the drive cannot be formatted in the standard way. Removing all sections is low-level formatting. It also deletes all the files that are present on the USB stick. However, this debugging option is the most efficient.
Additional software is required for operation. It is recommended to download the "HDD Low Level Format Tool" software. The software is free to download and can be easily found online with a Google search query.
After the preparatory stage, you can start low-level formatting.
The process of partitions and re-creating them:
1.- Connect external media to your computer. Run the downloaded program. for
2.- Find and select MicroSD in the list of units.
3.- Click on the "Continue" button.
4.- Select "Format" and confirm the action.
5.- Open the Start menu on your computer.
6.- Go to "Windows Administration Tools".
7.- Open the "Computer Management" section.
8.- Click on "Disk Management".
9.- Find the required flash drive, right-click on the black area.
10.- In the menu that opens, select "New Simple Volume" and click on "Next."
11.- In the section "File system", specify "FAT32".
12.- Confirm the creation of a new section.
This process will help you to correct all the errors that occurred in the operation of the SD card. However, even low-level formatting does not guarantee that problems will not arise in the future. You should carefully monitor which files are stored on the MicroSD and check them for viruses.
How to recover data on SD cards?
In some cases, the above methods may not be able to solve the problem you are experiencing. The only possible way out of this is to format the device.
But what about the data?
If you have valuable files on your SD card that you cannot afford to lose, use Starus FAT Recovery application. for It will quickly and efficiently retrieve a document of any length from a FAT formatted device and may even indulge you with the discovery of old data that you may have already forgotten about.
1.- Connect your SD card to your computer and run the Starus FAT Recovery program. You will be greeted by the Recovery Wizard, the automatic start of which may be disabled in the future. Click Next .
2.- In this window you will see a list of all the disks and cards found. Select the device you want to scan and click "Next"
3.- Select the type of scan:
3.1.- Quick scan: it performs an ultra-fast check of the hard drive and identifies the latest files installed on it.
3.2.- Full scan: deep scan your device to find even the oldest documents. This verification can take much longer than a quick verification.
We recommend performing a Full Analysis to obtain more complete information.
4.- The preview function allows you to examine a file of any format before restoring it. With Starus FAT Recovery, you can view images, videos, and read any text file.
5.- Select the files you want to recover, right-click on any of them and press the "Recover"
You can evaluate all the "data recovery" possibilities before registering the Starus FAT Recovery tool.
Download SD card data recovery software and try it completely free. All functions are available in the trial version, including preview of recovered files.
A little advice
Your damaged USB flash drive or memory card is most likely still under warranty. So, if your storage device is constantly having trouble, take a little time and make a refund or replacement. I recommend this because you shouldn't trust a USB drive that shows signs of unreliability over and over again.
Please note that the above methods to repair a memory card and USB drive are common for recovering devices. Due to specific device issues, having had times when these methods may not be suitable.
Just in case, if you are looking for methods to recover a damaged hard drive,
How to retrieve the card Hardware?
Here is what the process of recovering data from a physically damaged microSD memory card looks like.
The first thing we will do first is make sure that we are dealing with a physical damage or a logical problem.
The correct diagnosis of the type of damage allows you to adopt the appropriate strategy, determine the time and save higher costs for the customer.
When I am convinced that the problem is not logical / programmatic, I can start to start SD card data recovery.
How to fix a card with physical damage
To read the memory of a damaged microSD card, you must access your contacts. On some models, they are hidden under a plastic cover or tape.
There are also models in which the contacts are open. In my case, the contacts are hidden under a layer of plastic that needs to be torn off.
I do this with sandpaper or fiberglass cleaner. Be especially careful not to damage the tracks when rubbing the plastic; damage to them will interfere with further data recovery.
For sandpaper, start with the largest grit size, 1500, and work your way up to 2000 to the smallest grit size, 2500, controlling at each step the thickness of the remaining plastic to remove.
After reaching the contacts, clean the memory card with isopropyl alcohol and a brush. Now we apply the gel-flux to the prepared memory card and then to the BGA balls.
The flux facilitates the adhesion of the tin balls to the contacts and protects them from movement during soldering.
The size of the BGA balls is selected based on the diameter of the drive contacts. With the small ones I use 0.3 mm, with the large ones 0.6 mm.
Now is the time to prepare the cables that will connect the damaged memory card to the reader.
I will use a 0.1mm enameled wire. First, cut XXX into equal pieces, each about 6 cm long.
Then with a knife / scalpel, scrape off the tips of about 3mm of enamel. Now, with a soldering iron, put some tin on the ends of the wire. This treatment will facilitate subsequent welding and conduction.
We have cables, drive and reader. Time to put it together now. A stereomicroscope (preferably with a gentle magnification setting), a diagram for connecting a damaged memory card, and a reader will be helpful.
We start soldering from the reader side soldering the wires to the damaged card. In our case, we have a total of 16 welding cables, including #####.
Inspect after completing the weld. The ends of the cables (without insulation) cannot be touched, such as the pins and other tracks on the card.
Incorrect pin connections can result in total memory corruption, resulting in no data recovery.
The pinout may differ for different storage media. There is no single standard here. For atypical systems, you will need to use the same functional memory card and oscilloscope to generate the appropriate signal outputs.
If you've already connected your memory card to the reader, it's time to try reading it. If everything went well and the memory chip is intact, we can read it and save it to a file.
Now we can start converting the discarded memory image into a "readable" form.
In the case of our map, we have to perform the following XXXXX operations, starting of course with the ECC error correction.
After completing these operations, we see a list of files and directories that can be restored.
In the case of memory cards and flash drives based on monolithic systems, we often do not know which controller is used in a given medium.
This complicates and extends the data recovery process, since we do not know what operations this controller performs during read / write operations.
The described example of data recovery refers to a microSD card based on a "monolith" system. Data recovery from other "monolithic" systems is similar.
What do we need to repair Hardware
1.- Fine sandpaper (2500, 2000, 1500) or fiberglass cleaner.
2.- Isopropyl alcohol
3.- A fine soldering iron
4.- Pencil to mark
5.- Liquid gel flow
6.- BGA balls of 0.3 mm or 0.6 mm in diameter or thin can
7.- 0.1mm diameter enameled wire
8.- Scalpel to cut
9.- A set of hardware and software for data recovery (for example: PC3000 Flash - ACE Laboratory, Visual Nand Reconstructor - Rusolut, Flash Extractor - Soft-Center)
Recovery method Hetman FAT Recovery?
On the Internet, you can find several free software options by which you can try to restore your data immediately and without additional payments.
It is up to each user to decide which programs to use when it comes to data recovery. However, if you are interested in recovering almost all files, the right decision is to use Hetman FAT Recovery.
Download the program from the developer's official website and run the installation file. It will start the wizard to guide you step by step through the installation of Hetman FAT Recovery on your desktop or laptop. Installation is very simple and quick, so it won't be difficult even for novice users.
When the installation is complete, run the program. Hetman FAT Recovery will perform an initial scan of the operating system and will display all disks and storage devices installed or connected to your computer.
Data recovery with Hetman FAT The program's interface is very similar to that of Windows File Explorer, so it is very easy for anyone to use this tool. Find your memory card among other partitions and double click on it. The program starts the recovery wizard to guide you step by step through the settings required to begin restoring your files.
Check the Full Analysis option (looking for any available information). In the selected option, do not change anything on the lines FAT (USB drives, digital cameras, memory cards, Windows 9x) and Content Aware Analysis (search for file content). These will allow the program to restore the memory card's file system, run the SD card signature scan, and recover all the information it contains, including data deleted several months ago.
Hetman FAT Recovery. Finish This window shows the list of all files and folders that the program has found and recovered. When you click on a file, you can view its contents in the preview window so that you can check the recovery results and ensure that the files are working properly before saving. After you have selected all the files to be recovered, click the Life Ring Recovery button found on the main menu panel.
Hetman FAT Recovery The file recovery wizard will open a pop-up window where you must choose the preferred method of saving the files that you have marked for recovery. The wizard allows you to choose between one of four options: save data to any hard drive, internal or external; burn files to an optical disc (CD / DVD); create a virtual ISO image or upload data using the FTP protocol. Check the cell next to the save method of your choice and click Next.
Hetman FAT Recovery. Save files Depending on the choice you have made, specify the necessary options for saving the files in the next window and click Recovery to complete the process. For example, when you choose Save to Hard Drive, you will need to set the path to the preferred directory and check or uncheck the boxes for additional settings.
Hetman FAT Recovery. Save to HDD Now all your files have been restored and saved to the safe location you have chosen. Open the files and make sure they are in good condition. After that, you can format the SD card to correct possible errors with one of the methods we have described above.
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How to recover corrupted SD card .-