I have just installed CentOS 6.5 minimal. The reason I installed the minimal version is that the full version had ISOs of over 3GB each and my CD-RWs can only told about 750 MB.
I would like a graphical desktop. I tried
sudo yum update
sudo yum groupinstall basic-desktop desktop-platform x11 fonts
and they both ran without any errors. However, when I tried to run the desktop using
sudo gdm
and it just hung in the command line. When I tried
gdm
I got
** (gdm-binary:2164): WARNING **: Failed to acquire org.gnome.DisplayManager: Connection "1.37" is not allowed to own the service "org.gnome.DisplayManager" due to security policies in the configuration file
** (gdm-binary:2164): WARNING **: Could not acquire name; bailing out