Repair of Win7/Win8 dual system boot boot menu

Considering the stability and compatibility of Win8, I believe that many people are equipped with Win7 and Win8 dual systems, but after installing it, you will find that the boot menu will bring a lot of problems. In order to help everyone better, share the situation with you here, write this article in order to help more people to take less detours, the methods in the article are pro-test. This method is applicable to Win8's full line of products so far.
First talk about two possible situations: A. First install Win7, then install Win8 bad consequences: 1. Win8 is the default system after booting, if you choose Win7, it will definitely restart and then enter Win7 2.Win8 once collapsed, There is no system disk boot, even Win7 can not enter the analysis. Reason: As we all know, Win8 introduces the function of quick start. The official statement is to store some of the information needed for system startup in a file, and call it directly after booting. It will save a lot of time. But in fact, to correct its essence, it is actually dormancy. So this is why the metro boot menu appears after the Win8 icon is displayed, not before this, because the default quick start is turned on, then the boot will not directly read the boot, but will enter the system first, if The boot menu is placed before Win8 starts, so it will be skipped directly. Solution: 1. The principle is to restore the menu of the metro to the normal menu that is started at boot. I personally use BCDautofix v1.23 (BCD), of course you can also use Win7 bootsect to fix. You can fix it in Win8, but it turns out that under Win8, there is a certain probability that there will be a false shutdown phenomenon, the power indicator will not go out, and the keyboard will return to the login interface after knocking the keyboard. The reason should be the nature of the quick start function. of. Therefore, it is recommended that everyone still be advanced Win7 repair, after the automatic repair is completed, you can run the msconfig command to enter the system configuration boot label to modify the default system and wait time. As for the operating system display text you can change it yourself in Win7 optimization master, this requires netframework3.5 environment, my Win8 installed 3.5, no installed children can run under Win7, modify the operating system display text, I modified It is Windows8 and Windows7. The display is simple, the order of the top and bottom can be adjusted. My is to put Windows8 on it. This is basically completed, then enter Win8, press win+X to run the command prompt with administrator privileges, enter the command powercfg -h off, or manually turn off the quick boot in the power options of the control panel, because only this is true The shutdown menu will display the boot menu in front of the Win8 icon. Otherwise, you will still enter Win8 directly, and no boot will be displayed. In fact, it is not awkward to turn off, just about 10 seconds slow, the total time is about 30 seconds, it will not have much impact, but Win7 does not need to restart once, and then go to the control panel to open or run powercfg -h on is also OK. 2. Run cmd (by Vista primary school) as administrator under Win7, enter: bcdedit /export c:\\bcd_backup bcdedit /default {current} bcdedit /displayorder {current} /addfirst bcdedit /timeout 30 B. Install Win8 first, then Install Win7 Solution: Relatively good solution, just set Win8 as the default startup item, then turn off the Win8 system and start it as fast as A.