CentOS (Community Enterprise Operating System) is based on Red Hat Linux provides enterprise-class Linux distributions are free to use the source code. Each version of CentOS will get years of support (by way of security updates). The new version of CentOS issued once every two years and each CentOS version is periodically (about every six months) updated to support new hardware. In this way, the establishment of a safe, low-maintenance, stable, high predictability and reproducible Linux environment. Compared to other Linux distributions, its stability trustworthy.
The CentOS installation we are using CentOS7, we will first of its proceeds ready, ready to start the installation.
1. Open the virtual machine, install 
2 .. optimize and proceeds to install 
3. Turn on the virtual machine, system configuration 
system default minimum installation, problems occur in the use environment, we directly adjust. 
linux want to use it in the resource file or directory regardless of storage space must be mounted, or can not use.
/:Root directory. linux directory on the root system is designed around the spindle, like a tree, like underneath there are many branches. Similar to Microsoft's system disk (partition necessary)
swap: swap system, similar to the Windows virtual memory. (Necessary partition)
the Boot: boot partition
home: home directory (except administrators, other general users at home directory) 
4: disk configuration is complete, enter the system, set up user 
administrator account login success. To begin setting is on the network.
5: Enter the password to open networking capabilities 
for testing, you can see the network connection is successful
Well, CentOS all installation steps are completed.
CentOS proceeds can file a private letter or message was left for me to obtain.