Data recovery. What is not recommended to be done with a hard drive if the data stored on it is important to you. Reasons and methods for recovering data from disk

Data recovery from hard drive  is a complex and time-consuming process. First of all, it is necessary to determine what the main difference between the concepts of repair and data recovery is:

Unlike hard drive repair  , the purpose of which is to obtain a workable device, the purpose of recovering data from a hard disk is to correctly extract information.

Prices for recovering data from a hard drive in Serty Service

Make sure that your problematic drive works mechanically. It should be turned off immediately, and help should be sorted from the hardware data recovery service. At a minimum, you should see the specified physical disk. Consider the best way  connect the drive to start recovery.

Avoid writing any new data to disk. In a critical situation, you can also consider creating a disk image and working with an image, rather than with the original disk. In chapter 14. Do you know what type file system  are you trying to recover?

In this case, all measures are aimed at reading the data and transferring them to another hDD.

There are many specialized custom programs  for data recovery. But the programs are designed to scan a working hard drive. In addition, these programs work in the operating system, which itself accesses the hard drives connected for scanning to diagnose them. And, often, the operating system itself interferes with data recovery from the hard drive or does not allow working with a faulty drive at all.

Performing a Drive Recovery Search

If you know the type of file system you are trying to recover, for example. This can increase search speed as well as simplify search results without including unnecessary data. Chapter 7 to receive additional information. The device selection window includes the following information.

The drive recovery settings windows prompts the user to choose between automatic or manual recovery. The selection in this window configures the search. lost files. Lost files are detected by sequentially searching for unique disk file signatures. Lost files help Restore My Files to find and rebuild the folder and file structure.

In order to obtain data, it is necessary to exclude testing attempts operating system  idle hard drive.

How to do it?
This requires specialized equipment designed to recover data from hard drives, with an operating system independent interface that allows you to directly work with a failed drive. For example, this allows you to make the PC-3000 hardware and software system developed by ACE Lab in Rostov-on-Don.

Automatic Disk Recovery uses pre-selected common file types. Disk recovery using selected file types. “Disk recovery using selected file types” allows the user to manually select file types to help find the missing file and folder structure. It is assumed that you use this option only.

In this case, you manually select common file types and add additional ones. The advantage of manually adding a file type is that in addition to searching for local file system entries, you are also looking for lost files by type. If the original file and folder structure cannot be restored, you can still restore the contents of the file as a lost file.

In principle, data recovery technology comes down to sector-by-sector or file-by-file copying from a faulty hard drive to a working one. But, in order to correctly subtract the unreadable sector, it is necessary to select the copy mode, individual for each specific case.

Typical malfunctions in which data is recovered from the hard drive :

1. Logical destruction of the file structure of the hard drive

An analysis of the destruction of the file structure and the search for lost files and directories on the hard disk is carried out. Depending on the degree of destruction of the file structure, data can be restored from the hard disk in 2 ways. In the first case, the search for lost fragments of the file structure (FAT, NTFS, MAC) is performed. If only the root directory (ROOT) is destroyed, the hard drive is scanned for directories and subdirectories. If the file system is corrupted (deleted) and the first data recovery option does not work, the second scan option starts. The necessary files are searched over the entire volume of the hard disk by their signature (i.e. by file type)

The drawback of adding many file types is that each type of adding requires additional processing time, and this will slow down the search. We suggest that you do not select more than 10 file types at any time. After the necessary selection has been made, click the "Start" button to start the search.

Phase 1 of 5: Searching for Known Topics

The search phase is determined by the text above the progress bar. The following describes the search for Disk Recovery with the default settings. Phase 1 is very fast and completed within seconds.

Phase 2 of 5: Partition Recovery

  Stage 2 of the disk recovery tries to find the missing partitions. Restore My Files performs two separate disk passes that look for partition tables. This part of the search usually takes less than 20 minutes. Partitions located are rebuilt in the next step.

2. A large number of defects on the hard drive.


They can be located both in the HDD service area and in the MFT zone (information about the location of directories and files). Data recovery is performed by restoring the service area and subtracting the maximum sector-by-sector copy from the faulty to a working hard drive. Then, if necessary, a logical hard scan  drive. (see p1)

Phase 3 of 5: Partition Recovery

Partitions located in phase 2 are rebuilt and displayed on the screen of search results by phase. They are created using a naming convention. After adding, the restored section can be viewed even if the search continues. Use the various data browsing and sorting and filtering features to determine if missing files are located.

Step 4 of 5: Finding Files and Folders and “Lost Files”

If the relevant files and folders are located in the section, the remaining search phases may be skipped and the files saved. Link source not found. below to learn how to skip the search phases. See Chapter 10, “Saving Files,” for more information on checking search results and saving files. Lost files by file signature are added to the Lost Files folder on the results screen and are immediately available for preview. However, the value of the lost files is limited, because although they contain the contents of the file, they do not have the original file name.

  3. Degradation (loss of operational properties of a block of magnetic heads of a hard disk).

There are times when the hard drive is even detected by the computer and the operating system, but any attempt to access logical drive  and access necessary files  leads to failure. Data recovery from the hard drive is carried out by selecting the reading mode and subtracting the maximum possible sector-by-sector copy to a working hard drive.

Their main use is to help find files and folders. Scanning files and folders and lost files on a large drive can be a lengthy process. Knowing when to best stop this phase can save many hours. In most disk recovery, the full structure of files and folders will be found at the beginning of the search. After the file system has been recorded, the file and folder structure can be rebuilt, and all files can be located without having to scan the entire disk.

Recovering files from flash cards

To rebuild the structure of files and folders. When file system entries are found, this number will increase sharply and then remain stable. Write down the approximate number of the block you are searching for, and click the Skip button. The following window will appear.

4. The block of magnetic heads (or one of the heads) of the hard drive does not work completely.



Recovery hard data  the disk is carried out by moving the block of magnetic heads from a working hard drive and the mandatory creation of the maximum possible sector-by-sector copy to a working hard drive. (see p3)

Phase 5 of 5: Restoring “Restored Partitions”

Stage 5 of the search is the restructuring of the file and folder structure. Depending on the number and complexity of the file system entries, this search phase may take up to 45 minutes. Skipping this final phase is impossible. Results are added as recovered partitions in the following format.

If the restored section does not contain your missing files, you can continue the search from the block in which the previous search was stopped. Start the search for Disk Recovery and follow the steps in the wizard. Start the search and when prompted, enter the start block.

5. Wedge of the bearing of the engine of the hard drive.


It occurs after the hard drive falls, or due to a structural defect in the HDD bearing. Data recovery is carried out by rearranging magnetic surfaces in a working hard drive.

Each recovery task must be approached individually, although many cases may be similar in algorithm.

Recovering data from a hard drive can be critical after a fire or flood. Many of the methods used to recover data from damaged drives  due to natural disasters are similar to data recovery methods used on failed hard drives  in less severe conditions. The value of the data can be enormous, and in many cases, companies and other individuals experiencing these types of disasters are faced with re-creating invaluable information. Even those who regularly create backups  their data are at risk if they do not store data reserve copy  in a remote place.

What is not recommended to be done with a hard drive if the data stored on it is important to you.

The most common error: data recovery from the hard disk using the technology of repair HDD.

NOT !!!To try to recover data from the hard disk, run various utilities (CHKDISK, SCANDISK, NU, Partition Magic, etc.) if you do not know the cause of the malfunction.

Recovering customer files, financial records, inventory records can be extremely difficult, and data recovery is becoming a critical process to save many companies and other organizations from going out of business. The data recovery team in some cases can recover data from hard drives, even if all plastic components melt, and otherwise the hard drive looks like a blackened mess.

The amount of hot air and smoke entering this hole can compromise the plates. Water used by fire engines can also enter a small hole. If access to the plates occurs before the water dries, then there will be more chances to recover data on the disk. If the water has dried, it leaves behind minerals, dirt, and other foreign materials, including the head and plate. The recovery percentage at this point becomes much less. Another risk for assembling the head is that the heat was so intense that the plates experienced melting. If the plate was physically deformed, there is little chance of restoring the data. If the hard drive is under water for a short time, it is likely that the head unit has not been threaded. When transporting the drive, it is vital to seal the drive, as well as other media, in a container with a minimum damp sponge. The recovery process has a greater success rate when the drive is adopted under these conditions. Almost all drives that withstood water for some time will have corrosion. Special chemicals can be used to prevent corrosion and restore the plates to a restored state. The standard technique used by companies specializing in the repair of damaged computer equipment is to heat components in a controlled environment for a while to dry them. This method can be disastrous for hard drives, and it is recommended that you do not try to open or dry the drive.

  • Inside the hard disk there is a component called the head assembly.
  • Special chemicals can be used to clean the surface of the plates.
  • In this case, speed matters.
  • If water has entered the head assembly, it is important that the drive remains wet.
If data recovery is possible, the data recovery team can do its job!

Repeatedly turn on / off the HDD, when it is already clear that it is faulty. As a result: the hard drive may fall into a knock, from which it will not come out. Data recovery can be very difficult.

Rearrange foreign controllers to your faulty hard drive, if you are not sure that such an operation is possible for this type of drive and will not lead to permanent data loss.

Why can hard drive data be recovered?

Is there any way to get my lost paper back? Data recovery on the hard disk is possible due to residual information, which means that some data continues to exist on the hard disk even after it is deleted. Saving data is useful for recovering data on your hard drive. Using a data recovery tool, it would be easy and simple to delete it back. In most cases, data recovery software can recover lost data after deletion or for other reasons.

In case of partial data loss, leave the hard drive running in the system, as accidental recording made over the missing information will lead to its partial or complete destruction. This may make the recovery of data required by the user impossible. (Even if you are sure that you are writing to another place.) If the information is not visible, the system determines this disk space as free and writable.

How to recover data from a hard drive?

If you have problems with hard driveIt is important to find a safe and reliable data recovery tool to avoid further damage. When you run the program, it will list all hard disksthat are connected to the computer, so you will first be asked to select a location, and then start the recovery process.

First, the program will begin a quick scan. Upon completion of a quick scan deep scan  will start automatically to find more files. Keep in mind not to save data to the place where data loss occurs. This may result in data overwriting.

Disassemble the HDD, especially open the hermetic block. (for magnetic surfaces or checking how round they are)

Solder the HDD controller parts yourself if you are not 100% sure what the cause of the malfunction is.

The hard drive is designed to store information. And sometimes such situations happen when he fails. How to save all the data that was on the hard drive? Let's see if data recovery from disk is possible.

Typical malfunctions in which data is recovered from the hard drive

A hard disk is a storage medium that is used on a computer or as an external storage medium. It helps people who store large files easy. But data loss often occurs when a hard drive is damaged or damaged. If you have lost data, what should I do? At the moment, it is important to save data to an external hard drive. But how can you do this? On this page you will learn how to recover faulty hard drive data. 2 solutions are available. Read the text and download the software to recover data from a faulty internal or external hard  drive.

A hard disk consists of several magnetic disks, control chip  and magnetic heads. Plates and heads are hermetically sealed, therefore, do not come in contact with the external environment. Any damage to one of them leads to the failure of the entire hard disk.

Information from the hard disk may be lost if it received mechanical damage during a fall, was formatted, there was a voltage drop or some kind of malfunction in the system, etc. In the above cases, data recovery from the disk is possible, so do not get upset. Such work is within the power of Serty-Service specialists, who will recover all lost data as soon as possible.

Prices for recovering data from a hard drive in Serty Service

   Job title    Price
   Hard Drive Data Recovery    from 2500 rub.
   Configure Cloud Backup    2850 rub.
   Customization Raid Arrays    1250 rub.
   Organization of data backup    2200 rub.
   Creating a Hard Disk Image    3500 rub.
   Setting up a remote data warehouse    1450 rub.
   Copy data    300 rub
   Copy data to external media    400 rub
   Copy data to a remote server    550 rub

Reasons and methods for recovering data from disk

All problems with the hard drive, in which it is necessary to recover the data of the hard drive are divided into hardware and software.

  • In the case of a physical malfunction of the HDD, that is, failure of the electronics and its mechanical parts, data recovery from the disk is possible due to bringing the hard drive into working condition, i.e. replacement or repair of all defective components.
  • If the hard drive is technically sound, but the information on it is not available due to accidental deletion, formatting, software failure, damage to the file system, etc. Hard drive data recovery is done using software, performed in automatic or manual mode.

Professional data recovery from disk in Serty-Service

Today, the most common problems that cause Serty-Service customers to recover data from a disk in Moscow are a virus attack, a hard drive malfunction, and file deletion. If you contact our wizards immediately, you increase your chances of recovering data from the HDD. After identifying the source of the problem, we will offer you the most optimal solution to the problem.

The prices of data recovery services from the hard drive in Serty-Service vary in a wide range and depend on the volume and complexity of the work. At the same time, the cost of recovering data from a hard disk in any case remains quite acceptable.

Our experts will quickly and inexpensively perform data recovery from a hard drive in Moscow after accidentally deleting information or formatting, as well as after physical damage  hard drive, when sticking magnetic heads, unreadable sectors, a non-working controller, etc. The main thing is to bring the HDD in for repair before writing new information to it.

Call us and we will restore your important data in the shortest possible time!