Set Windows XP as the Default Operating System in a Windows Vista Dual-Boot Setup

If we install Windows Vista as a dual-boot with Windows XP, Windows Vista is always set as the default Operating System.

If you want to set the default Operating System as windows XP instead of Windows Vista, there’s a quick command you can run to change it back.

First you’ll have to open an administrator command prompt.

Type cmd into the search box, and then hit Ctrl+Shift + Enter to open it in administrator mode.

You should be prompted for the UAC dialog.

Enter in the following command:

bcdedit /default {ntldr}


Example:

C:\Windows\system32>bcdedit /default {ntldr}
The operation completed successfully.

Now after rebooting, it will set XP as the default.