It seems it is not possible to launch a Windows File Protection in safe mode in XP.
Normally, it should write : sfc \scannow
but in safe mode, it says that
The error 0X000006ba occurs when the RPC server is unavailable. In the safe mode, the rpc service cannot be started.
I have done long search in google, and i have done all what i found like
run rpc service
install trusted certificate
Enable the System File Checker in registry
but it seems impossible to start sfc scannow in safe mode in xp
I would like to know if it is true