Sfc how does it work

You may perform a System File Checker process on that computer to make sure the system file that you intend to copy is a good copy.

Take administrative ownership of the corrupted system file. To do this, at an elevated command prompt, copy and then paste or type the following command, and then press ENTER:. Grant administrators full access to the corrupted system file.

Replace the corrupted system file with a known good copy of the file. If the steps above don't work, you may need to reinstall Windows. For more info, see Windows 10 recovery options. Windows 8. Need more help? Expand your skills. Get new features first. Was this information helpful? Yes No. Thank you! Any more feedback? The more you tell us the more we can help. Can you help us improve?

Resolved my issue. Clear instructions. So, if you wish to know the details after each scan, you can see the log file. The details of how to access the sfc log file and interpret it is mentioned in the latter section of the article.

Step 1: Type cmd in the start search menu, right-click on Command Prompt and select Run as administrator. The scanning process will take time. Do not close your command prompt in between the process. There might be situations or issues when you need to run an sfc scannow outside Windows, which is generally during the boot time. Sometimes, Windows can prevent you from entering the system. It can happen due to the display of blue and black screen in a loop.

Step 1: If you cannot log in to the system, press the power button, and wait till the laptop starts. As soon as you see the Start screen, press the power button again to shut it down. Repeat this process until you see Preparing Automatic Repair Screen.

If you wish to run the sfc command offline, then you can log in to your computer as usual and follow the mentioned steps. Next, go to Recovery from the left panel and click on Restart now under Advanced startup.

Now, this will restart your PC in repair mode. You can use Windows installation media to boot your computer and navigate to the repair screen and continue the further process, as mentioned below. Step 4: To perform the sfc scan during boot time, you need to tell sfc where Windows is installed on your machine. Before the boot process, Windows can be on a different drive. To check this, execute the command — wmic logicaldisk get deviceid, volumename, description.

Note down the drive where Windows is present. Best 8K TVs. Best VR Headsets. Best iPad Mini Cases. Best Gifts for Cutting the Cord. Best Bluetooth Speakers. Awesome PC Accessories. Best Linux Laptops. Best Gaming Monitors. Best iPads. Best iPhones.

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