How to install dual system win8.1?

Next unified Xiaobian brought you win8/win8.1 dual system installation tutorial, teach you how to install two systems on the computer, let's take a look.
The usual installation methods are:
1, virtual optical drive loading image installation (can install single system /dual system);
2, use nt6 hdd installer installation (can install single system /dual system).
The article is written in the example of Win8 (Consumer Preview), which is also suitable for the official version of Win8.1 RTM.
The following is the relevant content of Method 1, you can look at it~
1. Features:
The system partition cannot be formatted during installation. After the system is installed, the original system file will be saved in the name Windows. The .old folder can be deleted if it is not needed, and it is not suitable for installing 64-bit Win8.1 on a 32-bit system.
Second, install dual system:
First, download the Rubik's cube virtual drive: Click here to download, use the virtual pseudo-optical drive to load the image.

Open the image directory, find the setup.exe file in the sources folder (note, must be the setup.exe in the sources folder), double-click to open the installation program, see the following picture:

The installation update here refers to the installation of dynamic updates, which will automatically solve the known problems that may cause the installation to fail, and will not install all the patches. If there is network available during the installation, you can choose to update without selecting updates. Also, the next step:

Enter the key, please search for the relevant key, the next step:

Accept the license terms, the next step:

Remember to install the double System, must choose "custom installation", the next step:

Select the partition reserved for Win8 here, do not install Win8 to the partition where the current system is located, the next step is to start copying File, expand the file.