XP system automatic repair command (sfc) detailed

system poisoning, cleared nine viruses, the system is also destroyed, and used this command, I feel good, dedicated to everyone cmd> Sfc.exe system file repair check Commanding Windows system for a long time, it is inevitable that system file corruption will be lost. In fact, it is enough to check Sfc.exe (a Windows utility to verify system file integrity and repair system files) through system files. XP, Click "Start-Run", type "cmd", open the "Command Prompt" window, enter SFC after the cursor prompts, and press Enter to change the system file checker. For example, "sfc/scannow" is to check the current system. Whether the file is damaged, the version is correct, if an error occurs, the program will ask you to insert the XP installation CD to repair or replace the incorrect file. If the Dllcache folder is broken, the latter is not available, you can also use "sfc/scanonce" or The "sfc/scanboot" command fixes the contents of this folder to ensure system security and stability. /SCANNOW Scan all protected system files/SCANNONCE immediately Scan all protected system files. /SCANBOOT Scans all protected system files each time it starts. /REVERT returns the scan to the default settings /PURGECACHE Clear file cache /CACHESIZE=x Set file cache size