How can I back up both my computer and USB connected hard drives?

I have a new 4TB Passport drive and I want to back up my computer and an older Passport (G Drive) which I am now using to expand storage on my computer. When I try to “add a backup” to my new 4TB Passport, the WB backup software does not show anything other than my C drive. I want the new 4TB passport to automatically back up both my computer’s C drive and the USB attached G drive. Please tell me how this can be done. Thanks !


Select “Edit Files” instead of “Add backup Plan” and you should be able to see the (G) drive as a backup source.