With the advent of digital cameras, the process of creating photos has become much easier, and the average user is much closer to the photo industry. Previously, in order to see photos it was necessary to print them, with the aim of which, without fail, he would go to a photo salon. Now, photography is very accessible and everyone can take pictures without having to have any special knowledge.
But the most important reason - unwillingness to disclose usually banal methods, which until recently were described as the pinnacle of technology. All these methods of recovering data from physically damaged drives can be described as partial replacements. Placing the plates in the donor disk does everything except the system data, which are described in detail below. Data stored on a piece of slab whose surface has been frozen, for example, with a screwed head, cannot be restored - unless the future brings tools and technologies for re-packing chips from the slab.
External hDD - This is the same device as any other hard drive, which is prone to breakdowns and malfunctions. And it’s very useful to know how to deal with such problems. This article will be interesting both to those who were in this situation, and to other users of external hard drives.
Reasons why an external hard drive is not detected
Most of us use external hard drive to store data backup but external hard disks not always suitable for such purposes. That is why experts recommend creating several copies of important data on different storage media. And so the question of uncertainty or unreadability external hard computer disk is so important.
Now data recovery is difficult, and becoming more and more difficult. To achieve higher recording density and higher performance, discs are now factory set. Fine tuning makes it very rare for some discs to recover data by replacing traditional parts. This trend will continue, which will require disk-independent data recovery for virtually all media created in the coming years. In addition, the need for data recovery is likely to increase, and this is not due to a deterioration in the quality of the manufactured disks.
The external hard drive may not be detected by the computer in such cases:
- After sudden power surges during data transfer
- As a result physical damage
- As a result of a malfunction in the operating system during device interaction
- After being infected with a virus or malware
- Due to wear hard drive due to congestion
- Deletions system files disk or operating system damage.
If the hard drive is not correctly detected by the system, then after connecting it to the computer, you may not see anything. No sounds or automatic opening of the root directory of the disk, it may not even be visible in the Device Manager. Sometimes the following message may be displayed: “To use a disk in drive F: format it first. Do you want to format it? ” In such a situation, the only way out may seem formatting hard drive. But in this case, all data on the disk will be deleted.
A network lifestyle and anticipated data retention will always make large amounts of data in increasingly unfavorable places. Drives are starting to fall into increasingly less traditional markets such as cars, mobile phones, navigation and personal entertainment devices - this will cause the discs to be exposed to elevated temperatures, humidity, shock, vibration and neglect. This will result in discs used in atypical locations not being backed up as often as home computer or corporate database.
What needs to be done in order to restore disk health without losing data?
What can be done in such a situation?
Before giving such a disk to a service center, you can try the following:
- Try connecting the hard drive to a different USB port. If after that it will be detected by the computer, then the problem is in the faulty USB port.
- Connect the hard drive to another computer.
- Change the letter of the hard drive (change its name). For this:
- Open the folder "This computer"
- Look at the letters that already indicate the other drives
- Click in the top menu of the “Map a network drive” folder window and select the “Disk” menu
- From the Disk menu, select a drive letter that is not used
- Click “Browse” and select an unrecognized hard drive and click “Ok”
- Restart your computer and reconnect the drive.
The last point is to make the hard drive recognizable, but the computer may still ask you to format it. Do not panic, data will not be lost even after formatting.
In addition, the superparamagnetic effect, which causes the bits to deteriorate over time, the temperature and the external magnetic field also begin to cause data loss. The long-term effect of changing the record type from longitudinal to perpendicular is also unknown - this can lead to unexpected and unknown cases of data loss.
The procedure for recovering from a hard disk depends on the conditions in which data was lost, so it is very important to determine the type of damage before the recovery procedure. Each case is different, but with the help of simplification, we can divide it into several types.
Recovering data from a formatted external hard drive
After you format the hard drive, do not write anything to it. Do not save any data to it or give it access to other programs and devices. All your files are recoverable until they are overwritten with new data.
Loss of data due to logical damage to the data structure on the disk, for example, accidentally deleting files or entire folders with files, formatting partitions often associated with reinstalling the operating system, working with a computer virus, abnormal computer operation, for example, turning off the computer without first shutting down the system .
Logical recovery occurs when data is lost, but the hard drive itself is working. The key is to stop working on your computer when we understand that data loss has occurred to prevent overwriting the areas where they can still be. During file deletion, the operating system usually does not delete all the space on the disk on which it is located, but only deletes the information in the file distribution system from the place where it was located. From now on, the computer considers this area to be empty, intended for reuse, and sooner or later this area will be used, so it is important to transfer the medium to a specialized company as soon as possible to analyze the recovery options that you want to recover.
After completing the formatting process, immediately disconnect the hard drive from the computer and boot. Run the program and in the main menu select the external hard drive from which you want to recover files.
Double click on it. In the next window, select the type of analysis you need and click next. After the analysis process is complete, you will see a list of folders and files that are to be restored. By clicking on any of the files in the right window, you can see its preview.
When the drive is in good working condition, customers often try to recover their data, but without fundamental principles, data recovery can be effectively prevented even when it comes to a specialist. Physical damage occurs when media, including the hard drive on which data was saved, failed, for example, due to a crash, incorrect operation of the drive. Firmware located in the service area, inaccessible to the user, due to damage to the surface of the disk, damage to the electronics or damage to one of the read / write heads.
Mark the files necessary for recovery and move them to the recovery bin. Then click the restore button. A window opens asking you to specify a method and path to restore files. Select the required functions and click next. After the process of saving files is completed, they can be viewed in the appropriate folder.
In such cases, you need to temporarily restore the drive in order to obtain data to restore access to the data zone. In situations where there is physical damage, and not the amount of data and the degree of complexity, and therefore the amount of necessary action determines the price of the data recovery service. When the disk refuses to obey, we must first restore it to “life”, read the surface and, finally, analyze and restore the file structure. Therefore, it does not matter whether we need to restore a single file or all possible data.
Remember to have at least two backups of important data. Other than that, do not interfere with hard work drive during its operation. But in case you find yourself in a similar situation, do not panic - use our tips to restore your data.
Hello everybody! So we have already saved more than one person from data loss on your external drive if it is connected. In this article, we will consider a method and program for recovering data from a hard drive, flash drive, external storage and other devices after formatting, unsuccessful extraction and disconnection, and also if the way to check your problem disk with standard Windows tools did not help.
This is a magnetic media storage device for storing data. Its purpose is to store all information and files, that is, documents, images, music, films. It also includes all programs, operating system and individual preferences for each program. Given this fact, it is worth protecting yourself from the loss of all these items. To do this, do backup. However, if a data loss situation occurs, you can get help from specialists.
Damage - what affects the loss of information?
The first group of injuries includes physical damage. Damaged electronics or mechanical components may be damaged. In such cases, it is necessary to replace, unlock or repair a specific item. Particular difficulties arise when recovering data from a disk in case of surface damage. As a result, often there is no 100% recovery.
So I do not advise anyone to be in this situation: a flash drive, a hard drive, external usb for some reason, your drive does not open or you accidentally formatted all the data, and the information on the device is vital to you. What to do? The main thing is not to shake, everything will be okay. Consider an example of both full and selective data recovery.
Damaged sector - data transmission sector, the read error of which gives an error. This is one of the most common mistakes on hard drives. The information that is stored here is usually not readable. A sector is logically damaged - it is a sector that, as a result of side effects such as shock, vibration, or malfunctioning of the writing sector, is saved correctly and reading gives an error even if it is in good physical shape. This sector can be reused by reuse or by storing it with another valid value. A physically defective sector - a sector to read magnetic surface degradation, wear, shock, vibration, mechanical wear of a disk or a drop in media will give an error. Such sectors are in most cases not readable. . The ability to recover data from disk is possible depending on the quantity, type and location bad sectors.
How to recover data from media?
1. If the hard drive or flash drive requires formatting then you (only if this method did not help, move on).
2. If you are not sure and the data on the media is extremely important - contact specialists. All your files will be restored in the wrong order and not with the names that you had before. All pictures, files, documents from 1 to infinity. Unfortunately, this is the principle of all data recovery programs. Otherwise, move on.
Physical damage also includes flooding or burning the device. In case of contact with water, do not attempt to dry. To recover data from a flooded disk, place it in a sealed foil bag and take it to us. The procedure in this case is time-consuming and time-consuming and requires experience in action. We have the right equipment and knowledge that allows us to safely complete the entire process.
As a result of a fall, the head is most often damaged. It is broken by rotating plates - during a fall. In normal use, these plates move in the so-called. air cushion, so there is no contact between the surface of the plate and the carrier. As a result of the fall, surface deformation and violation of such smooth operation. You must trust your data recovery specialists. You must disconnect the media from the power source, and not restart it. In this condition, we must entrust this device to us.
Download the data recovery program and run it. We see such a window in front of us (the program is in English but it's not scary). In this window you need to select your drive, it does not matter whether it is a hard drive or a flash drive, and press the SCAN button.
The program will chant your drive and try to collect all the information about the data that was on your hard drive before the consequences that led you to this page. The scan duration directly depends on the volume of the hard disk - the larger the volume, the longer the treasured and nervous process of waiting.
The second group of reasons for data loss are logical errors. These are structural integrity defects recorded on a data medium. In this case, restoring data from a disk is reduced to restoring the original structure. The remaining structure is used for this purpose. Such errors may occur as a result of updates. software, wrong configuration system, accidental deletion and, above all, the appearance of bad sectors.
The need for formatting may be related to the need for moment and prevention reserve copy. In such a situation, data recovery from disks is quite possible. However, for the success of the procedure, you must refrain from taking additional measures. This means that you do not need to reboot the device and save new information, it can lead to data overwriting and makes it difficult, and sometimes impossible, to obtain previous information stored on the medium.
Upon completion of the scan, the program will pop up the following window:
In this window we are interested in the line EXTRA FOUND FILES and we click on it with the left mouse button 2 times to open it and go to the next interface 
and finally we got to the treasured data recovery menu. In the left window you can choose how full recovery, so partial, and right you can even see what the recovery program found on your flash drive. By checking the boxes for the files we need, we select what needs to be restored and press RECOVER, then select the path 
where to restore it all and click ok. If you need to restore everything, select RECOVER ALL. I want to warn you right away that if you have a hard drive or a large flash drive, then the places where you want to save the recovered data should be almost 2 times larger. If there is a shortage of places I propose to restore partially. Let's look at examples of what each folder is responsible for: Gzip archive - archives that were on the hard drive; jpeg image - pictures; mpeg layer 3 audio - mp3 music; microsoft word 2007 — word documents and so on by analogy.
In the end result, you get the following completion window:
To summarize: we just recovered data from your hard drive, flash drive or removable drive. Yes! the files were restored in an uncomfortable form for us, now we have to poke around for a long time to look for the information we need. But! We have done this for free. In services, the service of recovering data from media costs about 1000 rubles per 1 gigabyte (for example, 20GB \u003d 20,000 rubles - a lot).
Now, any of you will be able to recover information from the media even if you deleted all the data from the hard drive or formatted the USB flash drive. Data recovery is possible - even after formatting, but you have to sweat! By the way, you can watch the video instruction below! Good luck !!!
