LDM – bad block(s) found

Product: Windows Operating System
Event ID: 23
Source: dmio
Version: 5.2.3790.1830
Message: LDM – bad block(s) found

This event indicates that Logical Disk Manager has detected I/O failures on a disk. This error occurs when read and write operations fail.


Possible causes include:

  • A hardware failure that prevents communication with a disk (for example, a loose cable, a loose disk controller card, or a cable failure).
  • Uncorrectable bad sectors on a disk.
User Action

Do one or more of the following:

  • Check the status of your hardware for any failures (for example, a disk, controller card, or cable failure).
  • Check Event Viewer for additional events from lower-level storage drivers that might indicate the cause of the failure.
  • Use Chkdsk or a similar software tool to check if any disks have bad sectors and need to be replaced.
  • Restart the computer.
  • Contact Microsoft Customer Service and Support.


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