1. Installing GNOME-Desktop:
How to use GNOME Shell?
The default GNOME Desktop of CentOS 7 starts with classic mode but if you'd like to use GNOME Shell, set like follows:
Option A: If you start GNOME with
Option B: set the system graphical login
2. Installing KDE-Desktop:
3. Installing Cinnamon Desktop Environment:
4. Installing MATE Desktop Environment:
5. Installing Xfce Desktop Environment:
Rather than make use of the hacking of a
To accomplish this simply do the following:
Then simply reboot.
The last bit will associate the runlevel 5 target as your default with respect to Systemd.
Doing it with Systemd
You can also use Systemd to accomplish this. This is arguably the better method since you're managing the state of the system directly through Systemd and its CLIs.
You can see what your current default target is:
And then change it to graphical:
In Systemd the targets runlevel5.target and graphical.target are identical. So too are runlevel2.target and multi-user.target.