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  4. How to Add OS to Windows Boot Manager

How to Add OS to Windows Boot Manager

March 31, 2015
By: Andrew Meer
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The Windows Boot Manager allows you to select between operating systems during computer startup. If the Boot Manager boots the operating system installed on the "C" drive automatically without giving you the option to select the operating system installed on the "D" drive, you must manually add that operating system into the Windows Boot Manager by running a number of commands through the Command Prompt console.

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Step

Run the Command Prompt console as an administrator. To do so, click "Start" and type "CMD" (without quotes) into the search box. Right-click the option labeled "Command Prompt" and select "Run as Administrator."

Step

Type "cd c:/" (without quotes) into the Command Prompt and press "Enter" to go to root of the "C" drive.

Step

Type "bcdedit /copy {current} /d "Windows Vista"" (without quotes) if the operating system you want to add is Windows Vista. Type "bcdedit /copy {current} /d "Windows 7"" (without quotes) if the operating you want to add is Windows 7. Press "Enter" to generate a boot loader. Note down the boot loader identifier (the numbers and letters that come up within the curly brackets) after pressing the "Enter" key.

Step

Type "bcdedit /set { } device partition=D:" (without quotes) while inserting the identifier that you noted down in the above step into the curly brackets. Press "Enter" to continue.

Step

Type "bcdedit /set { } osdevice partition=D:" (without quotes) while inserting the identifier that you noted down in Step 3 into the curly brackets. Press "Enter" to add the operating system to the Windows Boot Manager.

Step

Restart your computer, and the Windows Boot Manager will display the newly added operating system during computer startup.

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