How to fix boot boot menu for WIN7/WIN8 dual system

Considering the stability and compatibility of WIN8, I believe many people are installed Win7 and Win8 dual system, but we will find that the boot menu will bring a lot of problems. In order to better help everyone, here to the situation and share with you, write this article is to help more people less detours, the article methods are to be tested. This method is applicable to Win8 products so far.

First, there are two possible scenarios:

A. First install Win7, then install Win8

Adverse consequences:

1. After the boot Win8 is the default system, if the choice of Win7, it is bound to restart again into the Win7

Once 2.win8, there is no system disk to guide, even Win7 can not enter

Analysis Reason: As we all know, Win8 inside the introduction of the rapid launch of this function, the official said is to be part of the system to start the information required to store in a file, the boot directly after the call, will save a lot of time. But in fact, to correct its essence, is actually dormant. So that's why Metro's boot menu appears after the Win8 icon is displayed, instead of appearing before this, because the default quick Start is open, then the boot is not directly read guide, and will first go into the system, if the boot menu placed in the Win8 before the start, then the direct skip.

Workaround:

1. The principle is to restore the Metro menu to the boot on the normal menu. I personally use the Bcdautofix v1.23 (BCD), of course, you can also use Win7 bootsect to repair. You can repair in Win8, but the fact that Win8 under use, there is a certain probability of a false shutdown phenomenon, power LED is not extinguished, knocking on the keyboard and then back to the landing interface, the reason is to quickly start this function of the essence caused. Therefore, we recommend that you or Advanced Win7 repair, automatic repair after completion can run Msconfig instructions into the system configuration under the boot tag to modify the default system and wait time.

As for the display text of the operating system you can change it yourself in the Win7 optimization master, This need netframework3.5 environment, my Win8 installed 3.5, no children can run under Win7, modify the operating system display text, I modify the Windows8 and Windows7, show concise, up and down order can be adjusted, I put the Windows8 on top.

This is basically done, then go to Win8, press Win+x to run the command prompt with administrator privileges, enter instructions powercfg-h off, or go to the Control Panel's power options to manually turn off the quick start, because this is the real shutdown, the Win8 icon before the boot menu. Otherwise it will go directly into the WIN8 and not show the boot. Actually turn off also nothing, just slow 10 seconds or so, the total time about 30 seconds, will not have too much impact, but Win7 start without restarting once, and need to go to the Control Panel to open or run powercfg-h on also line.

2.win7 run cmd under admin status (by Vista pupil), enter:

Bcdedit/export C:bcd_backup

Bcdedit/default {Current}

Bcdedit/displayorder {Current}/addfirst

Bcdedit/timeout 30

B. First install WIN8, then install Win7

Solution: A relatively good solution, as long as the WIN8 set to the default startup, and then the same as a situation to turn off the WIN8 system fast start on it