Hello, I am using Centos 7.1 The yum groupinstall commands are failing. As root I did a yum group list command. This returned various output with the following: "There is no installed groups file." Is it possible for yum groupinstall to work without a groups file? I think my systems administrator won't allow me to install such a file. If it is mandatory for yum groupinstall, how do I install a groups file? Does this command make irreversible changes? yum groups mark convert I want to try it. But I am working on a production server. thanks, Mike _______________________________________________ Yum mailing list Yum@xxxxxxxxxxxxxxxxx http://lists.baseurl.org/mailman/listinfo/yum