Fix Data Error Cyclic Redundancy Check (CRC)

Jean updated on Sep 17, 2019 to Resource | How-to Articles


A cyclic redundancy check error can keep you from accessing your files or your hard drive. An error prompt may state 'drive not accessible, data error (cyclic redundancy check).' You can use built-in Windows tools to fix this error then, afterwards, use EaseUS Data Recovery Wizard to recover any data lost.

Let's take a look at some user experiences with the cyclic redundancy check error first:

Case 1. Drive not accessible, data error (cyclic redundancy check):

"My 1TB Seagate Free agent GoFlex has some error in opening the disk. First, it asks me to format the drive before being able to use it. Of course, I won't format it because it's full of data. After canceling that dialog, an error message will appear saying: "Drive is Not Accessible: Data Error (Cyclic Redundancy Check)."

Drive is not accessible- data error (cyclic redundancy check)

Case 2. Cannot initialize disk: cyclic redundancy check:

"How can you fix an external HDD that fails to initialize? It gives data error (cyclic redundancy check) each time I try to fix it."

cannot initialize disk - data error (cyclic redundancy check)

Overview of Cyclic Redundancy Check (CRC) Error

What is a cyclic redundancy check?

The cyclic redundancy check, or CRC, is an error-detecting technology commonly used in digital networks and storage devices to detect accidental changes to raw data. It serves as a data verification method to check the accuracy of data on hard disk drives, CDs, DVDs, etc.

What is a cyclic redundancy check error?

When there's a bad spot on the media of your hard disk, a CRC error may occur. A cyclic redundancy check error can also be triggered by many other incidents that seem to be inevitable. For example, registry corruption, a cluttered hard disk, an unsuccessful program installation, or misconfigured files. Generally, when you receive the error message 'data error (cyclic redundancy check)', there is something wrong with the files or the hard drive.

Fixes for Data Error Cyclic Redundancy Check

Besides preventing us from copying files, accessing hard drive data, or initializing a hard disk, the data error detected by cyclic redundancy check will potentially cause system failure on the computer or data loss on the hard drive. Thus, it's necessary and urgent to fix the data error found by cyclic redundancy check. There are four ways you can apply to recover data from an inaccessible hard drive or remove the cyclic redundancy check data error from HDD, USB flash drive, SD card or other disk storage drive.

Method 1. Fix Data Error (Cyclic Redundancy Check) via CHKDSK

With the CHKDSK utility in Windows, you can scan for and repair a drive's errors or file corruptions that cause the cyclic redundancy check data error.

Run the chkdsk utility to remove cyclic redundancy check error:

Step 1. Open "Command Prompt" by typing it into the "Start" menu. You must run CHKDSK commands as an administrator to have the necessary privileges to execute the scan. So right-click "Command Prompt" and choose “Run as administrator”.

Step 2. Enter chkdsk X: /f in Command Prompt. Replace 'X:' with the drive you'd like to run the scan on. 

Click to copy

Step 3. Wait for the scan to complete. Once the disk is checked and repaired, restart your computer to see if it worked.

If you don't have any technical know-how and want to minimize data risks, using third-party software could be a better choice. The Command line is suitable for computer professionals since wrong commands can cause severe problems. Therefore, we strongly recommend you try an automatic command line alternative.

EaseUS Tools M is a practical computer fixing tool that is safe and light-weighted. It's a perfect alternative to CHKDSK command. Use this one-click tool to solve your computer issues.

To fix file system error or disk error:

Step 1: DOWNLOAD EaseUS Tools M for Free and install it.

Step 2: Open the software and select the "File showing" option. 

Step 3: Choose the drive and wait for repairing. After the operation completes, click the "View" button to check the drive. 

select the drive and check off file system error

Method 2. Repair Missing/Corrupted System Files that Cause Data Error (CRC)

Windows system files generally include hardware drivers, configuration files, Windows DDL files, and other files that make up the Windows registry. As mentioned above, registry corruption may lead to a data error (cyclic redundancy check) on your computer. Thus, running the System File Checker tool to repair the missing or corrupted system files on your computer is helpful to fix the cyclic redundancy error resulted from system file corruptions.

Step 1. Click "Start" and type cmd.

Step 2. Right-click "Command Prompt" and choose "Run as administrator".

Step 3. If you are using Windows 10, you should first run DISM.exe to make a Windows image to protect your data:

Click to copy

Step 4. When the DISM command has completed, type the following command to start scanning and repairing your system files.

Click to copy

Method 3. Recover Data from Inaccessible Drive with Data Error (CRC)

If you find yourself in one of the following situations, you will need to perform data recovery to rescue your files either on your computer or external hard drives.

  • Receive the error message 'Data error (cyclic redundancy check)' with the description 'F:\(the drive letter of your hard disk) is inaccessible' and the error remains after the fix
  • After running CHKDSK for the 'cyclic redundancy check' error fix, the problem is solved but you find important data was cleaned along with the errors

To recover data from an inaccessible hard drive or retrieve files removed by the command lines, you can use the hard drive recovery software - EaseUS Data Recovery Wizard to get back your files. This version of EaseUS Data Recovery Wizard allows you to recover unlimited files after the payment.

Step 1. Run hard drive data recovery software.

Select the location of the hard drive. Let the program scan the drive by clicking "Scan".

select a location and click scan

Step 2. Scan and find hard drive data.

After the scan, you can check and preview the found files. You can click "Filter" to find a specific file type. Also, you can search for wanted data in the searching box. After that, you can double-click each file to preview it.

select files from the cyclic redundancy hard drive

Step 3. Restore data on the hard drive with Cyclic Redundancy error.

Choose all found files on your hard drive and click "Recover". Specify an empty external storage device or a safe location on your PC for saving lost data. Click "OK" to start restoring your lost hard drive data from cyclic redundancy error.

recover data

Method 4. Send for Manual Repair

DBR (DOS Boot Record) corruption on your hard disk can also result in 'data error (cyclic redundancy check)' on your drive. If none of the fixes works, you can send your hard drive for a repair.

Do You Need Specialized Data Recovery Services?
You may need further help for tough data loss situations like reformatting drive, RAW disk, partition loss, repartition failures and system boot error. Consult with EaseUS Data Recovery Experts for cost-efficient one-on-one manual recovery service. They could offer the following services after FREE diagnosis:
1. Unformat the drive
2. Repair the RAID, RAW disk or operating system
3. Recover lost partition (the one that cannot be recovered by software)

Hope as least one of the solutions above can help you fix the cyclic redundancy check error.


100% of people found this article helpful.


Frequently Asked Questions

1. Why choose EaseUS Data Recovery Wizard?

"EaseUS Data Recovery Wizard is the best we've seen. It's far from perfect, partly because today's advanced disk technology makes data-recovery more difficult than it was with the simpler technology of the past, but it's fast and efficient..."PCMag

"The first thing you'll notice about EaseUS Data Recovery Wizard Pro is that its interface is very clear and uncluttered, with only a small collection of self-explanatory controls. You won't find lots of extra options hidden in a system of hidden menus, either; what you see really is what you get."techradar

"Recover lost files, even after deleting a partition or formatting your drive."Macworld

2. Why cannot I recover 2GB data for free?

It is recommended to check the version installed is Free or Trial because they are different versions.

Trial has data preview function but cannot save any files, while the Free version enables to recover 2 GB files. The default free space is 500 MB and you may share the product on social media to get another 1.5 GB.

3. Why cannot the recovered files be opened?

A file is saved as 2 parts on the storage device: directory info (which is comprised by file name, time stamp and size info, etc.) and data content.

If the files with original file names and folder structures cannot be opened, one possible reason is the corrupted directory info. There is still a chance to recover the data content with the RAW Recovery method in our software.

4. Why isn't it suggested to recover the files back to the original drive?

The storage structure of the lost files would be altered or damaged by any changes on the drive. If you save the recovered files back to the same drive, the original data structures and data content would be corrupted or overwritten, which causes permanent data loss. So you should prepare another disk to save the files.

5. How can I check whether my data is recoverable or not before purchase?

The Free version helps you save 2GB files to better verify the recovery quality of our product before purchase.

6. How long does it take to scan the drive?

It strongly depends on the capacity of your hard drive and the performance of your computer. As reference,most drive recoveries can be completed in around 10 to 12 hours for a 1-TB healthy hard drive in general conditions.

Related Articles

About Data Recovery Wizard

It's super easy to recover 250+ types of files after deletion, disk formatting and virus infection. Click the links and compare the difference of each version.