First-timer here, hope you can help. I have a laptop with two external hard-drives. One holds games, music and movies, the other holds work-related spreadsheets and documents as well as personal documents. I have half-a dozen nieces/nephews who visit frequently and go to my "computer room" to play games and music, and watch movies, using the guest sign-on, which I don't mind in the least, but I'm worried that curiosity might lead them to opening and maybe deleting/damaging the material on the other drive. They probably know much more about PCs than I do. Is there a way I can protect the other hard drive so that they can't access it? Any help would be appreciated.