How to solve the double system problem of win8 and win7?

The experience version of win8 came out, trying to install an experience.
Feeling that win8 takes care of the tablet, the PC is not easy to use, and even the start menu is gone. However, the frequency of using the window key is much higher, and the display of some basic applications requires the window key. Look at a pdf book is full screen, can not zoom in and out; see the picture is the same. After unlocking the lock screen, you need to drag the screen with the mouse. The full tablet unlock mode is used. It feels a bit strange with the mouse. It is inconvenient to close the machine and move the mouse to the right side of the sidebar. Of course, win8 also has a lot of advantages, and now it is just an experience version. I feel that it is more appropriate to have a flat plate.
I was looking at a post on the Pacific computer step by step, but there are still some problems. Say something to pay attention to:
First unzip the win8 image iso file to the D drive, then save the install.wim in the sources folder to the root directory of the D drive.
The main problem is to copy the Bootmgr file, suggesting that there is no permission, try to copy with a u disk version winpe, nor. Trouble, directly use 360 ​​to force the deletion of the original file and then copy it. Of course, if you just want to experience win8, it is best to back up the original Bootmgr.
Open the downloaded Windows VHD and follow the steps in the post to say that the path is changed to D:\\Win8_VHD\\Win8_V.VHD. In fact, it is not necessary, just choose to log in to the system interface to see something better. It should be noted that if you want to change the step to mount and unload later, you should also change it. Otherwise, the startup is unsuccessful. I just didn't take a closer look. After entering the result, it is still win7.
After confirming that the win8 system will be automatically loaded into the virtual disk in the future, the Z-disk needs to be formatted in the middle, and it is determined that there is no permission, ignore it, it does not matter. For this, I set the next admin rights. The result is still that the formatting is unsuccessful. In fact, it is not necessary.
Then mount and restart the computer.
OK, start to experience win8!
PS: win8's ugly fish boot screen … … Hey, I thought my computer bug, halo.