The "RestoreHealth" command is part of the Deployment Imaging Service and Management Tool (DISM) in Windows. This command is used to repair a Windows image, particularly if the system files have become corrupted. It is a powerful tool for maintaining the integrity of Windows installations and can be executed via the Command Prompt (CMD).

Examples:

1. Open Command Prompt as Administrator:

   To execute the RestoreHealth command, you need to open the Command Prompt with administrative privileges. You can do this by searching for "cmd" in the Start menu, right-clicking on "Command Prompt," and selecting "Run as administrator."

2. Execute the RestoreHealth Command:

   Once you have the Command Prompt open with administrative privileges, you can run the following command:

   DISM /Online /Cleanup-Image /RestoreHealth

   This command will check the Windows image for corruption and attempt to repair any issues it finds using Windows Update as the source for the necessary files.

3. Using a Local Source for Repair:

   If you have a Windows installation media or a mounted ISO file, you can use it as a source for the repair. This is useful if the system does not have internet access or if Windows Update is unable to provide the necessary files. Use the following command, replacing X:\sources\install.wim with the path to your source file:

   DISM /Online /Cleanup-Image /RestoreHealth /Source:X:\sources\install.wim /LimitAccess

   The /LimitAccess switch prevents DISM from contacting Windows Update and forces it to use the specified source.

4. Check the Health of the Image:

   Before running the RestoreHealth command, you can check the health of the Windows image with:

   DISM /Online /Cleanup-Image /CheckHealth

   This command will quickly determine if the image is repairable.

5. Scan the Image for Corruption:

   For a more detailed scan, use:

   DISM /Online /Cleanup-Image /ScanHealth

   This command will check for any component store corruption and log it, but it will not perform any repairs.

Conclusion:

The DISM tool, and specifically the RestoreHealth command, is an essential utility for Windows systems engineers and administrators. It helps ensure that the Windows operating system remains stable and free from corruption, which is critical for system performance and reliability.