Whether you first install Windows XP Professional or install Windows Vista First, it does not matter, the most important is the next operation, and now I will introduce my personal installation of dual-system method. For example, install Windows Vista into the C disk and install Windows XP Professional into D disk.
New Installation Dual System
This is related to starting a dual system issue and will be modifying Vista boot Manager to add win XP bootstrap information to the BCD file. So I suggest you use Vistaboot Pro. Vistaboot Pro provides a graphical interface for the user to modify settings at a glance, which is not difficult for ordinary users.
Installation instructions for Vistaboot Pro:
①wndows XP systems must have the Microsoft. NET Framework 2.0 installed to install the software.
②windows Vista system installation, you must right-click the program or its shortcut, select "Run with Administrator account" or turn off "UAC", otherwise there will be insufficient permissions error prompt box.
③ if the system has a firewall, you must allow it to access the network.
How to use Vistaboot Pro
①current Settings: Here you can view the configuration information for the current boot manager, review the previous recommendation to select "File→check for Updates", or perform a "rescan BCD Registry" rescan, To ensure that the current configuration information is up to date.
②change settings: The user can set up the operating system that is started by default, and select it directly from the Drop-down list box, using the same method as "system Properties→advanced→startup and Recovery". Click "apply!" directly after modifying button to take effect. It is important to note that the option to remove the Vista Boot Loader is also provided here, but use caution before using it because you will not be able to access Vista after the deletion.
③manage Entries: Here you can adjust the order of each item in the Multiple boot menu, select it by "Up" and "Down" two buttons, and of course you can delete a startup item here. You can also add an operating system here. For example, I'm adding an operating system named "Windows XP SP2 Professional" with a boot program that is "C".