Troubleshooting the CHKDSK Program

Overview of CHKDSK
 

This topic explains problems that may be encountered when running the CHKDSK program. CHKDSK detects and corrects errors on the hard disk. Hard disk errors take two forms:

• File system errors, in which files are incorrectly linked or associated with one another.
• Bad sectors, in which places upon the hard disk cannot reliably store information.

CHKDSK scans the entire hard drive to detect and correct both types of errors. To run CHKDSK, refer to our Article Using the CHKDSK Utility  

Troubleshooting the Check Disk (Chkdsk) Program
 

• If CHKDSK seems to be frozen and not able to finish normally, check the hard disk light. If it is still flashing regularly, the CHKDSK program could be taking a long time to complete. Note the current percent complete, wait one hour, and note if the percent complete has changed. If so, allow the CHKDSK program to continue running to completion.
• If the hard disk light is not flashing occasionally, CHKDSK may be frozen. Restart the computer in Safe Mode and run CHKDSK again. For information on starting in Safe Mode, refer to the following articles by Operating system -Windows 8/8.1,  Windows 7,  or  Windows XP.  (for Windows 10 instruction please see Microsoft Support) 

   

  ​If CHKDSK does not finish properly in Safe Mode, be sure to back up important data before proceeding further. Failure to do so may result in loss of data.

   

• Hard disk errors that CHKDSK cannot fix can often be corrected with diagnostic and repair tools available from the hard disk manufacturer. To determine where to get the repair tool for your particular hard drive:
  1. Click Start, click My Computer, right-click the hard drive to repair, and click Properties.
  2. Click on the Hardware tab and note the name of the hard drive, which is usually a model number.
  3. Search the Internet for this model number using Google or another search engine to determine who manufactures the hard drive with this model number.
  4. Go to the manufacturer's web site to download their diagnostic and repair tools for your hard drive.