A Linux systems can boot up\u00a0in various modes\u00a0based on user preference. For example we can configure a node to start on GUI mode, where once the node boots, the user will get a GUI based login screen, and will open a GUI window for user to start using it. It may be a preference on user who want to use the Linux node as a workstation for example. On the other hand, a server administration may prefer his system to start in multi-user CLI mode were the system will save resources on loading all GUI modules.<\/p>\n
The below command verifies the default environment on which a system boots. Different pre-set modes available are:<\/p>\n
[root@centos9test1 ~]#<\/strong> systemctl get-default ====== ===<\/p>\n Though the above node is presently on gui mode, which can be observed if a serial console or monitor is connected, the below command will switch the mode for GUI to multi-user CLI, that will be noticed on the console too.<\/p>\n [root@centos9test1 ~]#<\/strong> systemctl isolate multi-user.target<\/p>\n Please\u00a0note<\/em> that this command will not change the default setting, so that it goes back to GUI after a reboot.<\/p>\n The below command needs to be used if the default target needs to be changed<\/p>\n [root@centos9test1 ~]#<\/strong> systemctl set-default multi-user.target ===== ==<\/p>\n In case\u00a0we need the system to boot in a GUI mode\u00a0before loading the OS, the below process can be used.<\/p>\n As the server is powered-on and starts-up, at the grub<\/em> window, enter to the edit<\/em> option. On the line that starts with linux<\/em> append the following, and press ctrl+X<\/em><\/p>\n Similarly we can boot to a rescue or emergency mode too using the respective target.<\/p>\n","protected":false},"excerpt":{"rendered":"
\ngraphical.target<\/p>\n
\nRemoved “\/etc\/systemd\/system\/default.target”.
\nCreated symlink \/etc\/systemd\/system\/default.target \u2192 \/usr\/lib\/systemd\/system\/multi-user.target.<\/p>\n\n