I just did a fresh minimal install of centos 7 on new hardware. While playing around with window systems I removed X windows like so: >yum remove "X Window system" and then tried to re install >yum group install "X Window system" which gives this error: Maybe run: yum groups mark install (see man yum) No packages in any requested group available to install or upgrade I tried running: >yum groups mark install "X Window system" and get the same message. I tried different permutations removing the "s" on groups. Nothing seems to bring back the yum "X Window system" group. Can anyone help me resolve this issue and tell me what I did wrong? Thanks for your help. -- Paul (ganci at nurdog.com) Cell: (303)257-5208