Tips - Sfc /scannow coping CD rom binaries to different path

If you need to execute repair O.S. command:

sfc /scannow 

you need to copy cdrom binaries to different path (with XP/2003 you need to copy i386 folder to c:)

To give the ability that sfc command will search for local binaries on different path you need to change register settings:

HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Setup \ SourcePath.