Make changes to startup items-how to make the graphic interface become a character Interface

As you may see, the startup Item changes-how to turn the graphic interface into a character interface-Linux general technology-Linux technology and application information. For more information, see the following. This is a startup Item change I learned at school, an experiment in vmwarevm

In linux (I use RedHat5), log on with the root account, open the terminal interface, and enter

Vim/etc/inittab/press ENTER
(There is a space behind Vim)

In the file, find the id: 5: initdefault:
Insert
You can change 5 to 3...
Release of esc
Then press shift +:
Enter wp (SAVE) after)
Reboot (restart)
Re-enter the system to see if the character interface has been entered?