How to Add Vista to Windows 7 Boot Manager

1. Invoke a command prompt with Administrator priviledge. If you don’t know how to do it. Please follow the steps in this post. The instructions are for Vista, but they are the same.

2. Type the following to list the current boot manager settings.

C:>bcdedit

Windows Boot Manager
--------------------
identifier              {bootmgr}
device                  partition=C:
description             Windows Boot Manager
locale                  en-US
inherit                 {globalsettings}
default                 {current}
resumeobject            {59cad9f2-de83-11dd-9d9e-c59ac6c2613b}
displayorder            {current}
toolsdisplayorder       {memdiag}
timeout                 30

Windows Boot Loader
-------------------
identifier              {current}
device                  partition=C:
path                    Windowssystem32winload.exe
description             Windows 7
locale                  en-US
inherit                 {bootloadersettings}
recoverysequence        {59cad9f4-de83-11dd-9d9e-c59ac6c2613b}
recoveryenabled         Yes
osdevice                partition=C:
systemroot              Windows
resumeobject            {59cad9f2-de83-11dd-9d9e-c59ac6c2613b}
nx                      OptIn

3. Type the following to create a Boot Loader based upon the default boot loader.

C:>bcdedit /copy {current} /d "Vista"
The entry was successfully copied to {59cad9f6-de83-11dd-9d9e-c59ac6c2613b}.

4. Type the following to change the device to D: drive. Note the identifier is the one generated by step 3. This id is different for every boot loader. You have to replace it with the actual output when you create the boot loader.

C:>bcdedit /set {59cad9f6-de83-11dd-9d9e-c59ac6c2613b} device partition=D:
The operation completed successfully.

5. Type the following to change the osdevice to D: drive

C:>bcdedit /set {59cad9f6-de83-11dd-9d9e-c59ac6c2613b} osdevice partition=D:
The operation completed successfully.

When you are done, reboot the machine and you’ll see the option to boot to Vista.

CREDIT TO amida168 : http://www.kombitz.com/2009/01/09/how-to-add-vista-to-windows-7-boot-manager/

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