Windows reports “Data error (cyclic redundancy check)” when I try to copy files from an external HDD/USB or open certain files. I’m worried about data loss I haven’t run full repairs yet. Looking for safe recovery steps, recommended repair commands, and when to stop to avoid further damage.
How do I recover from a Data error (cyclic redundancy check) when copying files or accessing a drive?
- Thread starter lindamary
- Start date
You can try these steps safely:
Stop using the drive if it’s making strange noises to avoid further damage.
- Check the drive for errors – Open Command Prompt as admin and run:
<span><span>chkdsk X: /f /r<br></span></span>
(Replace X: with your drive letter.) - Try copying files to another drive – Sometimes you can salvage data even if some files are bad.
- Use data recovery software – Tools like Recuva or EaseUS can help recover files if the drive is failing.
Stop using the drive if it’s making strange noises to avoid further damage.To repair a cyclic Redundancy Check error, execute CHKDSK by typing chkdsk /f X: at the Command Prompt. In case files are not available, then try data recovery software such as Recuva. Inspect cables/ports. Create a backup of the data and reformatting the data, or get professional data recovery assistance in case the issue is not resolved.
I’ve run into that CRC error before—it usually means there’s a problem reading the disk or file. Here’s what’s worked for me:
- Check the hardware first: unplug and reconnect the drive or try a different USB port/cable.
- Run CHKDSK: open Command Prompt as admin and type chkdsk X: /f /r (replace X with the drive letter) to scan and repair bad sectors.
- Try another computer to rule out your own system as the issue.
- Use data-recovery software (like Recuva or EaseUS) if the files are important and CHKDSK can’t fix them.
- If it’s an external drive making clicking noises or still failing, it’s probably a hardware failure, and you might need a professional data recovery service.
marcowayne
Member
An error by a Cyclic Redundancy Check (CRC) typically indicates that a drive is corrupted or the files are corrupted. You may attempt the following actions with little danger:
1. to check disk drive space, enter Command Prompt as admin and run:
chkdsk X: /f /r
Insert your drive letter in place of the X:. This will verify bad sectors and also makes an attempt to repair them.
2. Recovery software should be used in case the required files are inaccessible (such as Recuva, EaseUS, or Disk Drill).
3. To avoid overwriting it is advisable never to write new data to the drive until it has been recovered.
4. In case of a successful repair after which it is recommended to first make copies of healthy files and then format the drive.
When this is a physical failure of the drive, it is best to save data then swap out the drive.
1. to check disk drive space, enter Command Prompt as admin and run:
chkdsk X: /f /r
Insert your drive letter in place of the X:. This will verify bad sectors and also makes an attempt to repair them.
2. Recovery software should be used in case the required files are inaccessible (such as Recuva, EaseUS, or Disk Drill).
3. To avoid overwriting it is advisable never to write new data to the drive until it has been recovered.
4. In case of a successful repair after which it is recommended to first make copies of healthy files and then format the drive.
When this is a physical failure of the drive, it is best to save data then swap out the drive.
In order to salvage a Data error (cyclic redundancy check), the initial step would be to run CHKDSK to fix disk errors (chkdsk /f /r). Recovery files with file recovery software such as Recuva. Immediately save valuable information. In case the drive is not functioning properly, take professional recovery services so as not to lose data.
Gsusangrey
Member
One, as much as possible, recover our data with data recovery software because repairs may result in data loss. After that, execute CHKDSK utility (chkdskX:/f/r in Command Prompt where X is the drive letter) to scanandrepair bad sectors and file system errors on the drive.
A cyclic redundancy check (CRC) error usually indicates disk corruption or bad sectors. To recover, first run CHKDSK /f /r in Command Prompt to scan and fix errors. If that fails, try copying data with recovery tools like Recuva or EaseUS Data Recovery. If the drive is severely damaged, consider professional recovery services.
A Data error (cyclic redundancy check) usually indicates corrupted files, bad sectors, or hardware issues on the drive. To recover, first run CHKDSK /f /r in Command Prompt to scan and repair disk errors. If that fails, try using reliable data recovery software to extract files before the drive worsens. In cases of severe damage, consider reformatting after backup or consulting a professional recovery service if the data is critical.
jainnorton
Member
To fix a "Data error (cyclic redundancy check)" while copying files or accessing a drive, run Chkdsk (Check Disk) from the Command Prompt for logical errors and bad sectors, and then run SFC /Scannow (System File Checker) to repair corrupted Windows files.
To fix a cyclic Redundancy Check error, run CHKDSK by typing chkdsk /f X: at the Command Prompt. Failing to find files, then use data recovery programs e.g. Recuva. Inspect cables/ports. Make a copy of the data and reformatting the data or seek professional data recovery service in order to address the problem effectively.
Nikhil Rajoria
Member
In case the drive is failing, make a backup promptly and consider professional recovery.
- chkdsk /f /f/r in Command Prompt.
- Attempt to use such a tool as Robocopy.
- Install recovery software (e.g., Recuva, EaseUS)