(Formerly known as "us II") How does one perform Quartus II in the environment of "Security SELinux? (SOC) (Quartus II) (Linux) (RedHat)

Abstract
Generally, when installing Linux, SELinux will also be installed at the same time. This will make the Quartus II Linux board unable to operate normally. How can this problem be solved?

Introduction
Environment: Windows XP SP3 (host OS) + reahat 5.4 (Guest OS) + virtualbox 4.1.4 + Quartus II 11.0

How can I install linux us II in Linux? In (SOC) (virtualus II) (Linux) (RedHat) (virtualbox), I have specifically stated that when installing RedHat, do not install SELinux, to avoid problems with the Quartus II notebook, if SELinux has been installed, the following warning messages will be generated during the Quartus II workshop:

The solution is to disable SELinux.

Step 1: Modify the/etc/sysconfig/SELinux issue

Step 2: Change SELinux of SELinux to Disabled

Run Linux again after saving the notebook, and then you can activate Quartus II normally.

See also
(Formerly known as US) how to install linux us II in Linux? (SOC) (Quartus II) (Linux) (RedHat) (virtualbox)