Modify windows7/xp dual system startup item big strategy

Recently, many friends have had problems with Windows 7 startup items when they restore or reinstall the system because they have dual systems installed. This problem is very annoying for enthusiasts. Ready to find answers in major forums and search engines, find a lot of messy solutions such as articles, materials, tutorials, etc., but have not been able to solve the problem, and finally! Through the small series of personal research, combined with the online scattered tutorials, summarize A set of more complete solutions! No need to use any extra tools, abandon idiot behavior, step into the master pure code to repair xp Windows7 startup items, let you want to change!

First, in repairing xp Before the Windows 7 startup item, it is necessary for Xiaobian to introduce you to the Windows boot order, so that everyone can understand the Windows system

xp:mbr-->ntldr-->boot.ini-- Here is the boot menu selection bar

Windows7:mbr-->bootmgr-->BCD--> Here is the Windows 7 boot menu.

From the top We can see that the most important file ntldr originally in Windows XP is not used in Windows 7.

1, if you only have one xp installed on the c drive, for some reason, "ldldr is missing" error, first make sure that your c drive ntldr file exists, and then use pe U disk to start ( Xiaobian never used CDs. In the command line, copy the Windows7 boot directory to the c drive first. Enter:

c:\\boot\\bootsect.exe /nt52 C: //nt52 represents the past NTLDR

Seeing successfully, you can successfully fix the xp boot menu.

2, if you only have one Windows7 installed on the c drive, for some reason, a startup error, please use pe to start (small series never used CD), copy the Windows7 boot directory to the c drive ,, input:

c:\\boot\\bootsect.exe /nt60 c: //Write NT boot information for the hard disk, /nt60 stands for bootmanager after Vista

Locate the bootmgr, if it still can't start, it may be BCD (equivalent to the boot.ini configuration file in xp). The boot list menu is lost. Workaround:

============================================ System32

bcdedit /store c:\\boot\\bcd /create {bb68514c-cff8-11dd-aca9-a775dac50ae8} /d "Microsoft Windows 7" /application osloader

bcdedit /store c :\\boot\\bcd /set {bb68514c-cff8-11dd-aca9-a775dac50ae8} device partition=C: //where C is your Windows 7 installation partition

bcdedit /store c:\\boot\\bcd /Set {bb68514c-cff8-11dd-aca9-a775dac50ae8} path \\Windows\\system32\\winload.exe

bcdedit /store c:\\boot\\bcd /set {bb68514c-cff8-11dd-aca9-a775dac50ae8} locale zh-CN

bcdedit /store c:\\boot\\bcd /set {bb68514c-cff8-11dd-aca9-a775dac50ae8} inherit {bootloadersettings}

bcdedit /store c:\\boot\\bcd /set {bb68514c-cff8-11dd-aca9-a775dac50ae8} osdevice partition=C: //where C is your Windows 7 installation partition

bcdedit /store c:\\boot\\bcd /set {bb68514c-cff8- 11dd-aca9-a775dac50ae8} systemroot \\Windows

bcdedit /store c:\\boot \\bcd /set {bb68514c-cff8-11dd-aca9-a775dac50ae8} nx OptIn

bcdedit /store c:\\boot\\bcd /displayorder {bb68514c-cff8-11dd-aca9-a775dac50ae8} /addlast

bcdedit /store c:\\boot\\bcd /timeout 5

pause

======================= ========

Copy above to Notepad, then abc.bat [batch file] save; run

3. If you have two operating systems For example, the c drive is the xp d drive is Windows 7, for some reason, your Windows 7 boot menu is broken, the repair method is above. If you can enter xp, then you don't have to pe.

4, if you have two operating systems, such as c drive is xp d drive is Windows7, for some reason, your Windows7 boot menu does not have xp boot option!

=== ======================================================================================== "Microsoft Windows XP" (Add XP boot menu, the menu name is Windows XP);

c:\\windows\\system32\\bcdedit /set {ntldr} device partition=c: //C means xp installation The installation partition where it is located

c:\\windows\\system32\\bcdedit /set {ntldr} path \ tldr //(add NTLDR boot);

c:\\windows\\system32\\bcdedit /displayorder {ntldr} /addlast

========== Save as a bat file and run it ========

Of course, if you want to put the boot order Modify it to do this:

into WINDOWS7-open "computer" & rdquo; attributes - advanced system settings - "startup and failure recovery" set - & ldquo; default operating system & rdquo; WINDOWS7 changed to an earlier version WINDOWS (also known as XP) - check "Show operating system" List time & rdquo; time changed to 5 seconds - OK

Below, Xiaobian attached some use of BCDEDIT:

BCDEDIT - Start configuration data storage editor

The Bcdedit.exe command-line tool modifies the startup configuration data store. The startup configuration data store contains the startup configuration parameters

and controls how the operating system boots. These parameters were previously in the Boot.ini file (in BIOS-based operations

systems) or in stable RAM entries (in operating systems based on the Extensible Firmware Interface). You can use

Bcdedit.exe to add, delete, edit, and attach items in the launch configuration data store.

For more information on commands and options, type bcdedit.exe /? <command>. For example, to display

details about the /createstore command, type:

bcdedit.exe /? /createstore

Alphabetical order in this help file For a list of topics, please run "bcdedit /? TOPICS".

Commands executed on storage

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