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DISM
The DISM command tool for Windows 10 comes with three options to repair an image, including "CheckHealth," "ScanHealth," and "RestoreHealth," which you want to run in order. Depending on the severity of the issue, you can also use the "RestoreHealth" option to fix the locally available image using different source files.
DISM command with CheckHealth option
The
CheckHealth option with the Deployment Image Servicing and Management command tool allows you quickly determine if there are any corruptions inside the local Windows 10 image. However, the option does not perform any repairs.
To check the Windows 10 image for issues with DISM, use these steps:
- Open Start.
- Search for Command Prompt, right-click the top result, and select the Run as administrator option.
- Type the following command to perform a quick check and press Enter:
DISM /Online /Cleanup-Image /CheckHealth
Once you complete the steps, DISM will run and verify any data corruption that may require fixing.
DISM command with ScanHealth option
The
ScanHealth option performs a more advanced scan to determine if the OS image has any problems.
To check problems with the ScanHealth option, use these steps:
- Open Start.
- Search for Command Prompt, right-click the top result, and select the Run as administrator option.
- Type the following command to perform an advanced DISM scan and press Enter:
DISM /Online /Cleanup-Image /ScanHealth
After you complete the steps, the advanced scan may take several minutes to check and determine whether the Windows 10 image needs repairing.
DISM command with RestoreHealth option
If there are problems with the system image, you can use DISM with the
RestoreHealth option to scan and repair common issues automatically.
To repair Windows 10 image problems with the DISM command tool, use these steps:
- Open Start.
- Search for Command Prompt, right-click the top result, and select the Run as administrator option.
- Type the following command to repair the Windows 10 image and press Enter:
DISM /Online /Cleanup-Image /RestoreHealth
Quick note: If the command appears stuck at any point, this is normal behaviour. After a few minutes, the process will complete successfully.
Once you complete the steps, the Deployment Image Servicing and Management tool will connect to Windows Update online to download and replace damaged files (if applicable).
SFC
The instructions outlined above are meant to fix issues with the system image, not the problems with the actual installation of Windows 10. After the image has been restored to a healthy state, you have to use the System File Checker (SFC) command tool to repair the current setup.
To use the SFC command tool to repair the Windows 10 installation, use these steps:
- Open Start.
- Search for Command Prompt, right-click the top result, and select the Run as administrator option.
- Type the following command to repair the installation and press Enter:
SFC /scannow
Quick tip: If errors are found, you may want to run the command around three times to ensure that everything was fixed correctly.
Once you complete the steps, the System File Checker tool will repair the system files using the local image files to fix issues with Windows 10, and the log files will be saved on %windir%/Logs/CBS/CBS.log and %windir%\Logs\DISM\dism.log, which you can view to get more details about the repaired files.