First , the system start level a total of six:
0: System shutdown mode, the system can not start normally
1: Single user mode, root permission, for system maintenance, remote login is forbidden.
2: Multi-user mode, no NFS network support
3: Full multi-user text mode, NFS, login to console command line mode
4: System not used, as reserved generally not
5: Graphical mode, enter GUI mode after login
6: Restart mode, default level cannot be 6, otherwise it will not start normally
Example: If we set the default mode to Poweroff.target, the boot shutdown cycle state will occur at boot time.
When you use the Reboot command, the following occurs: (stop at that location)
Workaround:
1) Restart the system, press and hold the keyboard as soon as the system starts, and press E to enter the editing interface
2) Write 5in the position, and press CTRL + X to make the system continue to start
3) After logging in, modify the system's boot level to Graphical.target to prevent the next occurrence of this situation.
A workaround for the startup level of the Linux system in the startup process