[windows] How to install WIN8 under win7 to achieve dual systems

1: Preparation for installing win8 dual system in win7
To install the win8 system in the win7 system, you must first create a system disk for the win8 system. The partitioning method is as follows:
First enter the win7 system, enter the control panel once, and then open the management tools "computer management" and click disk management

Win7 disk management and then select a disk with a relatively large capacity, for example, we select E disk, and then right-click on the E disk to select "Compressed Volume", and then enter the space size of the new disk that needs to be compressed and allocated in the "Input Compressed Space Amount", because the system disk generally requires a larger space, such as we allocate 20G disk, then directly enter 20480, and then click: "Compress", then we can see a green line of available disk space, and then we right-click on the space, as shown in the figure below:

Create a win8 system partition, click New Volume, and then Assign the following drive letter and enter the drive letter you want to assign (for example, I am assigned to an I drive). Then click Next〉Next〉Done! We can see the I disk in the resource manager, and finally we can change the name of the disk to win8, so that the preparation work is complete!

Create a win8 system disk for dual systems Recommended reading: How to install win7 on hard disk Tutorial on hard disk installation windows7
Two: The installation of win8 dual system in win7 officially begins In the above windows7 system we have created a win8 system disk, then let's enter the core points of our article, the installation of win8 system, here we use the method of installing windows8 directly on the hard disk, and the installation system directory is placed on the I disk (win8 disk).
1.) First, download the win8 system online, which can currently be downloaded in consumer preview, and then unzip.
It should be noted here that the downloaded win8 system should not be placed directly on the I disk, but should be placed on other disks, such as we can put it on the E drive, etc., and then unzip the win8 system files, which are still on the E drive.
2.) Open the unzipped win8 system folder, then find the setup.exe system installation run file in the sources file, double-click to start running the installation, the system installation after that is similar to our U disk installation win8 process, all the way to the next step, and fill in the win8 installation key to, in the following prompts to choose which disk to install, here we must choose to install it in the I disk (that is, win8 disk) we created, as shown below:

Be sure to choose to install win8 on the I (win8) disk and then follow the prompts to complete the installation, after about 20 minutes, after a long wait, the general system can be installed. Here is a brief explanation of why we need to create a new system disk when installing win8 in win7, first of all, to create a system staging, because the system is generally installed in the active partition, and because when installing win8 to the designated disk, after installing a certain disk, the system process will format or overwrite the corresponding disk data first, so if it is installed on other disks, there will be data loss.
If you feel that the windows8 system is not easy to use in the later stage, we can also simply uninstall the windows8 system, the method is also very simple, the format is win8 system disk (I disk), and then delete the partition, expand the partition space to other disks, and finally delete the selection of startup items on the win8 boot interface