Environment description: win10; VM Workstation Pro 12
(1) Create a new virtual machine and select Customize
(2) Go directly to the next step 
(3) Choose to install the operating system later 
Note: You can also choose the second item or the first item, that is, select the path where the pre-downloaded system image is located
(4) Select rhel7 64-bit
(5) Customize the virtual machine name and location
(6) Select the processor according to the configuration of your own computer 
(7) Select the memory size of the virtual machine according to the configuration of your own computer (physical machine), here is 828MB, click Next
(8) Select the virtual machine network type, here select the NAT type
(9) Select the IO controller type, I choose the recommended type
(10) Select the recommended type for the disk type, next step 
(11) Select the first item, create a virtual disk 
(12) Select the size of the virtual machine disk, custom size, here choose 20G; choose to divide the virtual disk into multiple files
(13) Custom virtual machine storage location
(14) Custom Hardware
(15) Select the system image file as shown below, the image file here is rhel7.2
(16) Click Finish
(17) Start the virtual machine
(18) After the virtual machine is started, jump to the following interface, select the system language type, and it can be modified after the system is installed successfully. Select Simplified Chinese here for easy reading 
(19) Close the security policy and click Finish
(20) Select the installation source
(21) Select the system installation environment and additional tools and close kdump
(22) Select automatic partitioning 
(23) Turn on Ethernet 
(24) Start the installation 
(25) Set the root password, which has already been set here; do not create other users for the time being 
(26) Restart
Reminder: Cloud computing software such as openstack has requirements for the system version: centos 7,
Therefore, learning the installation of the latest system can further learn new technologies.