The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume %2.

Details
Product: Windows Operating System
Event ID: 55
Source: ntfs
Version: 5.2
Symbolic Name: IO_FILE_SYSTEM_CORRUPT_WITH_NAME
Message: The file system structure on the disk is corrupt and unusable.
Please run the chkdsk utility on the volume %2.
   
Explanation

The file system structure on the volume listed in the message might be corrupt because of one or more of the following reasons:

  • The disk might have bad sectors.
  • I/O requests issued by the file system to the disk subsystem might not have been completed successfully.
   
User Action

Check the state of the file system and repair it if necessary.

To check the state of the file system

  1. Click Start, click Run, and then, in the Open box, typecmd
  2. To determine whether the volume is corrupt, at the command prompt, typechkntfs Drive:
  • If the message “Drive_letter: is dirty” is displayed, the volume is corrupt. In this case, repair the file system.
  • If the message “Drive_letter: is not dirty” is displayed, the volume is not corrupt and no further action is required.

To repair the file system

  1. Save any unsaved data and close any open programs.
  2. Restart the computer.The volume is automatically checked and repaired when you restart the computer.

Alternatively, you can run the Chkdsk tool from the command prompt without shutting down the computer first.

  1. Click Start, click Run, and then typecmd
  2. At the command prompt, type
  3. chkdsk /X Drive:Chkdsk runs and automatically repairs the volume.

If the following message appears, type Y.

“Cannot lock current drive. Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts?”

The next time the computer is started, Chkdsk will automatically run.

If the NTFS 55 message appears regularly, for example daily or weekly, run Chkdsk using the /R command-line option. This option allows Chkdsk to locate bad sectors on the hard disk.

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