使用Windows系统的用户有时会遇到系统引导文件丢失，造成系统无法正常启动。Windows系统引导文件丢失，即系统目录下Boot目录及Bootmgr丢失，一般的解决方案有如下两种：
1. 进WINPE系统进行修复。
2. 利用bootbcd修复，bootbcd c:\Windows /s c:。
第二种方法可能会报错：BFSVC: Failed to set element application device. Status = [c00000bb]，此时可以用如下的脚本进行修复。
如将该脚本保存为Windowstest.bat，需要修复的盘为z盘，运行命令Windowstest.bat 即可。
::@echo off
::make sure have one parameter
if [%1] == [] exit 1
::create environment
bcdboot %1:\Windows /s %1:
del %1:\Boot\BCD
::create BCD Filebcdedit.exe /createstore %1:\Boot\BCD
::create bootmgr
bcdedit.exe /store %1:\Boot\BCD /create {bootmgr} /d "Winodws Boot Manager"bcdedit.exe /store %1:\Boot\BCD /set {bootmgr} device partition=C:
::get device keyfor /f "delims=" %%i in ('bcdedit.exe /store %1:\Boot\BCD /create /d "Windows7" /application osloader') do ( set DeviceKey=%%i
)set DeviceKey=%DeviceKey:~2,38%
echo %DeviceKey%
::set BCD
bcdedit.exe /store %1:\Boot\BCD /set %DeviceKey% device partition=C:
bcdedit.exe /store %1:\Boot\BCD /set %DeviceKey% osdevice partition=C:
bcdedit.exe /store %1:\Boot\BCD /set %DeviceKey% path \Windows\system32\winload.exe
bcdedit.exe /store %1:\Boot\BCD /set %DeviceKey% systemroot \Windows
bcdedit.exe /store %1:\Boot\BCD /displayorder %DeviceKey%
bcdedit.exe /store %1:\Boot\BCD /default %DeviceKey%
::avoid winload.exe error bcdedit.exe /store %1:\Boot\BCD /set {default} osdevice boot
bcdedit.exe /store %1:\Boot\BCD /set {default} device boot
bcdedit.exe /store %1:\Boot\BCD /set {default} detecthal 1
