How to install win8.1 dual system under win10?

Win10 installed win8.1 dual system tutorial to slightly ~ The following will be for everyone to demonstrate win10 download win8.1 dual system steps, dual system can achieve two systems at the same time Oh ~ installation steps is not difficult, please refer to the following.
Xiaobian recommended to use the U disk installation method, and support both UEFI and traditional BIOS modes. After downloading the Windows 10 image, install the soft media cube, and find the Rubik's cube in the Rubik's Cube.

According to the tips in the figure, you only need to choose a good USB flash drive (must see carefully, don't choose the wrong one) and mirror, click “ start making & rdquo; you can, if prompted to destroy the U disk data, Please confirm that the U disk is not selected correctly, click OK.
After making the boot disk, restart the computer. Select to boot from USB to enter the installation environment. General brand machines have shortcut keys to select the boot media. These shortcut keys are usually F12, etc. Press the shortcut key after booting the brand machine logo, and then select USB or Removable similar options in the list that appears to boot from USB.

If you can't find the shortcut key, you can press DEL, F2, ESC and other buttons to enter the BIOS setup interface when the brand logo appears on the screen. Find the Boot related settings in the BIOS settings, and select the USB or Removable option. Set to the first startup option, and finally press F10 to save and exit. See the figure below for details. Note that there are differences in computer operation methods, you can search the online search for the corresponding model operation method.
Select the boot configuration option.

After entering the setup options, select the Enable Priority Settings option.

Adjust the USB device (Removable Dev.) as the first boot device.

After the setup is complete. Press F10 and select “OK” to save the settings and restart.

After restarting, you can enter the installation environment, then follow the prompts.

The above is the whole content of win10 installed win8.1 dual system, is it very simple?