6.c Configure systems to boot into a specific target automatically
...

Systemd Targets
...

List systemd targets

# systemctl list-units --type=target
UNIT                   LOAD   ACTIVE SUB    DESCRIPTION                 
basic.target           loaded active active Basic System                
cryptsetup.target      loaded active active Local Encrypted Volumes     
getty.target           loaded active active Login Prompts               
graphical.target       loaded active active Graphical Interface         
local-fs-pre.target    loaded active active Local File Systems (Pre)    
local-fs.target        loaded active active Local File Systems          
multi-user.target      loaded active active Multi-User System           
network-online.target  loaded active active Network is Online           
network-pre.target     loaded active active Network (Pre)               
network.target         loaded active active Network                     
nfs-client.target      loaded active active NFS client services         
nss-user-lookup.target loaded active active User and Group Name Lookups
paths.target           loaded active active Paths                       
remote-fs-pre.target   loaded active active Remote File Systems (Pre)   
remote-fs.target       loaded active active Remote File Systems         
rpc_pipefs.target      loaded active active rpc_pipefs.target           
rpcbind.target         loaded active active RPC Port Mapper             
slices.target          loaded active active Slices                      
sockets.target         loaded active active Sockets                     
sound.target           loaded active active Sound Card                  
sshd-keygen.target     loaded active active sshd-keygen.target          
swap.target            loaded active active Swap                        
sysinit.target         loaded active active System Initialization       
timers.target          loaded active active Timers  

Get current systemd target

# systemctl get-default
graphical.target

Set systemd target for next boot

# systemctl set-default [target]

Reboot
# systemctl reboot

or

# reboot