No need to feel sorry for me! I'm the one to feel sorry that I can't understand these technical stuffs in depth , though I spent some of my (enormous) valuable time here since 2011....learnt nothing Okay then, I'll try to backup my C:\ drive this evening and will report if succeeded.
You're right but something is not right at my side(encountered an issue that drive has some error and needs to be repaired [windows popup message] and started repairing automatically ) therefore, I faced that issue. Anyway, thanks for your continued advice, will remember to make everything in order next time I make a backup and restore thru your WINPE. sid_16.