Shulou(Shulou.com)05/31 Report--

This article mainly introduces "how to repair the system by sfc scannow". In the daily operation, I believe many people have doubts about how to repair the system with sfc scannow. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts about "how to repair the system by sfc scannow". Next, please follow the editor to study!

"sfc" is a "system file detection" program, which has been available since the DOS period to detect system files. If it is detected that the protected files have been overwritten by incorrect files, it will extract the correct system files from the system file backup (that is, dllcache) and replace the incorrect files. It is equivalent to a command to restore.

Start-> run-> then enter "sfc / scannow" (without quotation marks). Note: sfc must be followed by a space.

Sfc / scannow is a powerful tool for file retrieval and repair in Windows systems. If the system file is maliciously tampered with by a Trojan horse. You can use this tool to compare and then repair system files. However, often after the system file is destroyed, even Windows can not enter, then how to use this command ah.

First, you need a Windows installation CD.

1. Put in the installation CD and boot with the CD when booting.

two。 Select Repair Your Computer

3. Select the system disk (at this time, your system disk will change from C disk to D disk, don't worry)

4. Select Command Prompt to enter command line mode

Because it is in the PE environment, just using the SFC / SCANNOW command does not work, the system will tell you that the process is occupied and so on. At this point we are going to use the parameters of sfc / scannow.

Sfc / scannow / offbootdir=d:\ / offwindir=d:\ windows

Offbootdir refers to the partition in which the system is located

Offwindir refers to the directory where the system is located.

Then it will be the same as what we did in Windows. Just wait patiently.

PS: if you only need to check a specific file, you can use the following command

Sfc / scanfile=d:\ windows\ system32\ zipfldr.dll / offbootdir=d:\ / offwindir=d:\ windows

When you encounter a situation that cannot be repaired by sfc scannow, if it is win7, 8

1. The administrator opens cmd and runs:

Dism / Online / Cleanup-Image / RestoreHealth

It may take about an hour, and then restart

two。 Rerun sfc repair

At this point, the study on "how to repair the sfc scannow system" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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