Add double insurance for Windows 7 startup

When Windows 7 cannot be started, Microsoft officially recommends that you use Windows 7 to install the CD to start the system. However, when Windows 7 fails, we may not have a CD installed at hand. What should I do? In fact, you can add a backup for Windows 7 to start in case of unexpected requirements.

Start preschool: Learn How to start Windows 7

During normal Windows 7 startup, The nt60 Boot Record is activated first, then the "bootmgr" in the primary partition (usually drive C) is loaded, and then the "C: \ Boot \ BCD "and the boot menu are listed, and the boot files required for win 7 are loaded. Therefore, if an error occurs in the "bootmgr" and "BCD" files, Windows 7 cannot be started. Windows 7 comes with a "repair computer" and a self-installed Maintenance System (such as PE). Remember that the "BCD" file is started, so a fault occurs when Windows 7 is started, the regular maintenance mode will become invalid.

To enable Windows 7 backup to start, you need to change the hard disk Boot Mode to grub boot (multi-layer boot), and then place the "bootmgr" and "BCD" files in other partitions, finally, use "grldr" to start "bootmgr" for different partitions respectively ". With these secure Windows 7 boot backups, when "C: \ bootmgr" cannot be started later, we can also activate "bootmgr" for other partitions to start win 7.

Start grub c: \ grldr -- load c: \ menu.1st -- load c: \ bootmgr by default -- read c: \ Boot \ BCD start win7
Start grub c: \ grldr -- load c: \ menu.1st -- manually load c: \ bootmgr -- read c: \ Boot \ BCD backup start win7

Simple configuration: Generate backup and start

To start backup, just copy the "bootmgr" and "Boot" directories to other partitions. Run registry editor, find "HKEY_LOCAL_MACHINE \ bcd00000000", click "file -- uninstall Configuration unit" in the menu bar, and click "yes" in the pop-up window ".

Copy the "C: \ bootmgr" file and the "C: \ Boot" directory to drive D ("show all files" and "show files protected by the system" before copying ). After "bootmgr" is started, the "Boot \ BCD" configuration file under the same directory will be loaded. Therefore, you only need to use the "bcdtool" software to configure the "D: \ bootbcd" startup information. Click "launch configuration -- Open" in "bcdtool" to open "D: \ Boot \ BCD", and select "Windows Startup manager" in the left-side window ", change "device" to "partition = D.

To facilitate maintenance and reinstallation of the system, you can also add winpe boot in the E disk (or other non-system partition. Use the virtual optical drive to load the Windows 7 Installation File, copy all the files to the edisk, and configure it in "menu.1st.

Practice: use the backup menu to start

After completing the above operations, you only need to change the Boot Record of the hard disk to "Grub" and then configure it to use it. First download the file for boot (grldr and menu.1st) and place it in the C root directory. Run bootice.exe with the administrator ID, click "Master Boot Record", and select "grub for DOS 0.4.4" in the pop-up window ". Click "Install/configure" and select "write to disk" in the pop-up window ".

Changes to the primary Boot Record are dangerous. We recommend that you back up the MBR before making changes to back up the current Boot Record to a device such as flash memory for storage.

Restart the system now. After the computer is started, the system will be guided by grub (the system selection menu will be displayed). By default, Windows 7 is started, which is no different from the original one. If a fault occurs during the default startup, you can load "D: \ bootmgr" to start the Windows 7 system by selecting "win 7 backup" in the grub Startup menu. If the backup menu still cannot be started, you can also select "winpe" in the grub boot menu (provided that all win7 installation files have been released to the edisk) and activate "E: \ bootmgr "load the Windows 7 installation operation, go to the winpe system to start the repair or reinstall win 7.