Am 04.08.2017 um 19:01 schrieb Beartooth: > > I have a woefully dumb question. When I tell my wife's laptop, > with CentOS 7 installed and a live ethernet cable plugged into it, "yum > update," it fails saying that it doesn't see any repos. What do I need > to do to? Without a precise error messge (copy & paste what is printed out) it is hard to judge. rpm -V centos-release If that command does not print out anything then the default CentOS repo definitions are there and set. I then would guess the laptop does not have internet connectivity. Validate that ip a s prints out a valid network address. And that ip r s has a valid route to reach the internet. Is any internet address like www.google.com reachable from the system? Alexander