How to add backup startup protection startup failure for Windows7

When Windows 7 fails to boot, Microsoft's official recommended fix is ​​to boot the system using the Windows 7 installation CD. However, if there is a boot failure in Windows 7, what should we do if we don't have a CD installed? We can add a backup boot for Windows 7 in case it is needed.

Understanding Windows 7 Startup

When Windows 7 starts up, it first activates the NT60 boot record and then loads the primary partition (usually the C drive). Bootmgr”, then read “c:\\boot\\bcd” and list the boot menu to load the necessary startup files for Windows 7. Therefore, Windows 7 cannot be started once the “bootmgr” and “bcd” file error. Windows 7 comes with "repair computer" and self-installed maintenance system (such as WinPE, etc.) are all started with the "bcd" file, so Windows 7 startup fails, the normal maintenance mode will be invalid.

To get Windows 7 backup started, you need to change the hard disk boot mode to GRUB boot (multi-layer boot), then place the “bootmgr” and “bcd” files in other partitions, and finally use “grldr” Start "ldmg;bootmgr" for different partitions. With these secure Windows 7 boot backups, we can also activate Windows 7 (Windows 7 startup backup emergency steps as shown in Figure 1) when it is not possible to start. .

Configuration is simple: to generate backup starts

Just copy the backup to start & ldquo; bootmgr & rdquo; and & ldquo; boot & rdquo; directory to another partition. Run the Registry Editor first, then find "HKEY_LOCAL_MACHINE\\BCD00000000", click on “File → Uninstall Configuration Unit" in the menu bar, and click “ is ” in the pop-up window.

Then copy the “c:\\bootmgr” file and the “c:\\boot” directory to the D drive (“show all files” and “show protected files by system" ). Since “bootmgr” will load the “boot\\bcd” configuration file in the same directory after startup, so just use “bcdtool” this software configuration “d:\\bootbcd” startup information. Click “Start Configuration →Open” in “bcdtool”, open “d:\\boot\\bcd”, then select "Windows Startup Manager" in the left window and change "<;device" to “partition=D:” (Figure 2).

Tip: In order to facilitate maintenance and reinstall the system, you can also add WinPE boot on the E drive (or other non-system partition). Use the virtual drive to load the Windows 7 installation files, then copy all the files to the E drive and configure them to start in “menu.lst”.

Actual combat: Start using the backup menu

After completing the above operation, just change the hard disk boot record to “GRUB”, and then configure it to use. First download the files for booting (grldr and menu.lst, place them in the root directory of the C drive. Then run bootice.exe as an administrator, click on “ master boot record ” in the pop-up window, select “GRUB for DOS 0.4.4” Finally, click "Install/Configure" (Figure 3), select “Write Disk” in the pop-up window.

Tip: Change of master boot record It is a dangerous operation. It is recommended to back up the MBR” before the change, and save the current boot record to the flash memory and other devices.

Now restart the system. After the computer starts, the system will be directed by GRUB. Display system selection menu), the default startup is still Windows 7, and the original is no different. If the default startup fails, just select “Windows 7 backup” in the GRUB boot menu, you can load “d:\\bootmgr” Continue to boot the Windows 7 system. If this backup menu still does not start, you can also select "WinPE" in the GRUB boot menu (provided that the Windows 7 installation files have been released). Plate E), activated & ldquo; e: \\ bootmgr & rdquo; Windows 7 loading the mounting operation, into WinPE reloading or repair system boot Windows 7 (FIG. 4)

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