Very often when copying information from CD / DVD discs system gives CRC data error. What does it mean? This means that, unfortunately, your disk is damaged, and information cannot be copied. But do not despair - there is a way out! There are programswhich can read information from poorly readable or damaged disks. How to copy information from such disks - Talk in this article further.
CRC error meansThat your medium, that is, the disk, do not consider the mechanical damage due to mechanical damage. Or the drive on the computer is quite old and brought. First, try copying the disk on another computer and if the read error again happens - then the disk itself is damaged.
In this case, you need to examine the disk for the presence of dirt and damage. You can slightly wipe the disk from dust and fingers, do not leave divorces and without fanaticism! If there is damage to the top of the disk (where the inscriptions write) you need to draw a marker (sometimes helped).
Next, you need set one very useful program In such cases - Badcopy Pro. The program can read information from damaged disks. It implements special algorithms for reading failed sectors, due to which the checksum does not coincide and the CRC error pops up. But all, there is no full copy guarantee. For example, for video files it is not critical. When viewing you practically not notice a pair of bytes of missing (not copied, damaged information). Maximum - a couple of incomprehensible spoiled frames may appear. But all the same information will be copied, and you can see it, and it is almost impossible to do it on a damaged disk! Such discs jerk, hang - and sometimes for a long time.
The Badcopy program can restore data from unreadable disks, floppy disks, hard drives, flash drives. The program allows you to restore multiple file types: graphic, text documentsexecutable files, archives, etc.
And a simple, intuitive interface and a step-by-step dialog master allow you to achieve a goal even a novice.
If the media is very damaged - be patient, but there is no warranty of 100% of the recovery of information. It all depends on the degree of damage to the disk. All recovered data program copies to the specified folder on the hard disk.
The program will also be able to help when necessary:
- Get access to files that are not read.
- Restore lost photos on digital cameras.
- Restore files deleted from floppy disks as a result of quick formatting.
- Restore lost files on diskettes, CD / DVD-R and CD / DVD-RW discs.
- Restore data recorded during each of the sessions on CD / DVD-RW discs.
That's all - success!
Error in data (CRC) occurs not only with a built-in hard disk, but also with other drives: USB Flash., external HDD. This usually happens in the following cases: when downloading files through Torrent, installing games and software, copying and writing files.
The CRC error means that the file checksum does not match the one that should be. In other words, this file was damaged or changed, so the program and cannot process it.
Depending on the conditions under which this error occurred is a solution to the problem.
Method 1: Using the Operating Installation File / Image
Problem: When installing a game or program to a computer or when you try to write an image, the CRC error occurs.
Decision: This usually happens because the file was downloaded with damage. This could happen, for example, with an unstable working Internet. In this case, you need to download the installer again. If necessary, you can use the download manager or the Torrent program so that there are no connection breaks when downloading.
In addition, the downloaded file itself may be damaged, so when a problem occurs after re-downloading, you must find an alternative source of download ("Mirror" or Torrent).
Method 2: Checking disk for errors
Problem: There is no access to the entire disk or the installers stored on the hard disk that worked without any problems earlier. 
Decision: Such a problem may occur if the file system hard disk broken either he has bied sectors (physical or logical). If failed physical sectors are not amenable to correction, then the rest of the situations can be allowed using the hard disk error correction programs.
In one of our articles, we have already told how to eliminate the problems of the file system and sectors on the HDD.
Method 3: Search for correct distribution on Torrent
Problem: Downloaded via torrent The installation file does not work. 
Decision: Most likely, you downloaded the so-called "bit of distribution". In this case, you need to find the same file on one of the torrent sites and download it again. The damaged file can be removed from the hard disk.
Method 4: Check CD / DVD
Problem: When you try to copy files from a CD / DVD disk pops up CRC error. 
Decision: Most likely, the surface of the disk is damaged. Check it on dust, contamination, scratches. With a pronounced physical defect, most likely, nothing will happen. If the information is very necessary, you can try to use utilities to recover data from damaged drives.
Almost in all cases of one of the listed methods, it is enough to eliminate the error that has appeared.
Some users when downloading (or installing) files from any sources may encounter a CRC error that manifests itself with the message "Error in Data (CRC)". This problem usually occurs in a situation where the system captures the mismatch of the control data of the downloadable file, as a result of which an error message in CRC data occurs. In this article, I will tell you what the CRC data error is, under what conditions it occurs, and also explain how to fix it.
Screenshot error "Location Not available"
What is CRC.
Before you begin to describe what to do in a situation where an error in CRC data appears, you should explain what "CRC".
As you know, CRC (Cycle Redundancy Check - translated "Cyclic redundant check") It is an algorithm for creating and verifying the "File checksum". The latter is used in tracking the integrity of the transmitted data in order to prevent their damage or loss.
This algorithm based on a cyclic code calculates the checksum amount of the file and adds it to the body of the file itself. When downloading (copying) this file The system, having an algorithm for calculating the checksum, checks the correctness of the data obtained, and in the event of inconsistencies it gives a CRC error message (Data Error - Cycle Redundancy Check).
The CRC algorithm was invented in 1961, survived several qualitative improvementsand now is universal means To verify the integrity of the data obtained.
Features of the occurrence of CRC error
As for the causes of the occurrence of this dysfunction, the specific reasons for the CRC error may be as follows:
- Loss or damage of any of the network data packages when they are transmitted;
- Loss or damage to the data on the rigid disk (for example, due to bad sectors);
- Physical damage to the optical disk with information (CD, DVD, etc.);
- Violation of the integrity of the system registry;
- Random failure when installing the program;
- Invalid file configuration and so on.
To display the CRC code, there is such a program as Hashtab, which, after its installation, in the properties of the file itself (by clicking the right mouse button on the file, then select "Properties) displays the values \u200b\u200bof the checksums of this file.
Error in CRC data - problems with a hard disk
So how to fix the CRC error? Since it regularly happens because of the problems of accessing a hard disk, I recommend to perform the following:
Action 1. Restore the lost data on the hard disk. If a this problem There was an attempt to gain access to any file on a hard disk, then you should use various programs to restore lost data. In particular, you can try in the case software products As Power Data Recovery or Badcopy Pro, intended for the tasks you think.
For example, to use Power Data Recovery, you need to download and install the application, select "Damaged Partition Recovery" in the menu, and fully scan (Full Scan). If the lost data can be restored, then, first of all, you will need to copy them to a reliable and safe medium.
Action 2. An alternative option for restoring access to the data on the hard drive is the use of a system disk check utility.
- Go to the conductor, click the right mouse button on the problem disk (for example, with :), in the menu that appears, select "Properties".
- Click the Tools tab, click on "Check", check the ticks opposite two options for checking the disk, click on "OK", and then restart the computer.
- After rebooting, the system automatically uses the data integrity check on the hard disk, and will try to restore the damaged sectors (may take some time).
Action 3. You can also run a command line on behalf of the administrator (click on the "Start" button, write a CMD in the search bar (without clicking on the entry), click on the above-click of the same type of the right mouse button, and select "Run on the administrator name). In the command prompt, you must write:
cHKDSK C: / R / F - (instead of "C:" enter the name of another problem disk if necessary) then click on the input, and wait for the end of the verification.
How to fix CRC error - Alternative options
In addition to the problems of S. hard disk, CRC error may occur for other reasons. Therefore, make sure the CRC error do the following:
- If a this error It originated when installing any game, it will be easier to load its image again (or the program files themselves) from another source using proven level programs Download Master.Perhaps it will help get rid of CRC error.
Conclusion
If you have an error in CRC data, then, first of all, decide on the conditions that this error occurred. Most often it occurs when trying to download and install disk images (or the most programs) from the network. The effective means in this case will be the use of alternative resources for downloading data files, which, in most cases, helps to effectively solve the specified problem. If you are dealing with dysfunction in the hard disk, then you need to use Power Data Recovery or BadcopyPro level programs that can help you restore access to the files you need.
Error in data (CRC) occurs in the event of a non-compliance of the checksums of the file to which the utility appealed. This may mean that the file was somehow changed or even damaged.
Basically, this problem occurs when you install applications and games; Make copies of the file located on the disk; Write any disk or download to the torrent utility. Let's now consider the main causes of error in CRC data.
You need to check the checksums of your image. Especially if you told it from the network. To perform this to download the utility Hashtab.. After its installation in the window with properties will appear new inset By title " Hash-sum files" With it, you can make a comparison with the hash-amount of the image with the amounts exhibited on the site.
If you find that these amounts do not converge, but you have to download this image again. It is best to use the utility for this. UTorrent. When downloading files, she herself makes the miscalculation of their checksums. If you download files from direct links, then you can use the utility Download Master.
CRC data error occurs when copying from drive on HDD
Most likely, the error occurs due to the fact that the disc you use damaged or has dirt. Try to clean it and try copying from the disk. If you have nothing happened, but you really need files on the CD, you can use the utility Badcopypro..
Error in CRC data occurs when installing utilities or games
The best solution will reboot the image you downloaded. As mentioned above, it will be best to use such a utility as Download Master(for direct links) and UTorrent(for torrent is downloaded).
Error in CRC data occurs when installing utilities with HDD
Here we will need to check your file system. To do this, do the following:
- Press the key combination Win + R. And register the team cmd.. So you will go to Command line.
- IN Command line Enter cHKDSK C: / R / F(The letter C is your logical disk). This command will run the process of checking your hard disk on various errors And their corrections.
Error in CRC data occurs when using UTorrent
- Try updating the utility.
- Get rid of the problem distribution in the utility.
- You will have to delete the wrong file.
- Try to find another similar distribution and try to download it.
At times, when the main temporary storage of files was CDs, this error occurred when reading mainly scratched and pirate disks. Today, the reasons for its appearance became much more (since the methods of transferring files to the "screw" also became greater), although the mistake itself began to meet less often. We list the factors leading to the failure:
- Damaged surface of the optical disk;
- Unstable network operation, when transferring files via the Internet;
- Attempt to download or use knowingly "broken" file;
- Damaged surface of the hard drive;
- Disorders in the file system structure (for example, in file System USB media).
In all these situations, the file will either fail at all, or it can be done only after restoration work. The OS recognizes the problem on the mismatch of the so-called file checksum (or CRC), which is calculated during its recording to the carrier or attempt to read from the media. The user is issued a window with a diagnostic message: "Error in Data (CRC)".
How to treat CRC data error?
If the file checksum did not coincide before it is transferred to the disk, then only the search for its analogue will help correct the position. For example, by downloading the broken torrent, it is useless to mess around with him. It is much easier to search the same distribution elsewhere.
Or if this file downloaded from the Internet or you copied it to the USB flash drive - the easiest to download the file.
If the problem arises systematically, then it follows it under your nose. First, it follows.
Parameters hard checks disk by Bad sectors In Victoria.
As for the flash drive, you can try to start checking for the presence and correct error on it. For this:
- Select the flash drive icon in the "My Computer" window.
- Click on the icon right mouse button.
- In opening context menu Select the item "Properties".
- In the window that appears, go to the "Service" tab.
- Click on the "Check" button from the "Disc Check" group.
Check for errors with embedded Windows
If it does not help, and the disk check did not show the presence of serious problems with the carrier, "then you should contact the network quality test toolkit. The file downloaded by slices can become "broken" due to the cliff of the network during the injection process. A lot of tools will suit this check. Even built-in B. Windows utility Ping.
As you see the CRC HDD data error is related to the integrity of the file, when reading it occurs. It may be due to problems with the file itself and with the surface of the carrier on which it is located.
