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The device: \Device\Harddisk0\C. has a bad block (during an On-Demand Scan)
Technical Articles ID:   KB58302
Last Modified:  11/3/2016


McAfee VirusScan Enterprise 8.x



On-Demand Scan freezes and generates the following error:

The device: \Device\Harddisk0\C. has a bad block


Windows System Event log reports the following:

Category: None
Type: Error
Description: The device. \Device\Harddisk0\C. has a bad block


The hard disk has bad sectors or file system corruption that cause problems when scanning some files.


Run the Microsoft Windows repair utility CheckDisk, then run the scan again:

  1. Right-click Start and select Explore.
  2. Right-click Drive C and select Properties.
  3. Click the Tools tab.
  4. In the Error-checking section, click Check Now.
  5. Select the following options:
    • Automatically fix file system errors
    • Scan for and attempt recovery of bad sectors
  6. Click Start.
    You see the following message:

    The disk check could not be performed because the disk check utility needs exclusive access to some Windows files on the disk.
    These files can be accessed only by restarting Windows. Do you want to schedule the disk check to occur the next time you restart the computer?

  7. Click Yes.
  8. Restart your computer to allow the disk check to complete.
  9. After the disk check has finished, run the On-Demand Scan again.

If there are errors during CheckDisk, or if bad block errors continue after CheckDisk completes successfully, contact Microsoft Support (http://support.microsoft.com/) or your hard drive supplier/manufacturer.

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Affected Products

VirusScan Enterprise 8.8


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