Install Windows XP on Your Pre-Installed Windows Vista Computer
Continuation.....
Download and install VistaBootPro from
VistaBootPRO - Go PRO with Microsoft Windows Vista Boot Manager
During the install you'll be forced to install the .NET 2.0 framework. Open up VistaBootPRO and then click on the System Bootloader tab. Check the "Windows Vista Bootloader" and then "All Drives" radio buttons, and then click on the Install Bootloader button.
At this point, the Windows Vista bootloader is installed and you'll only be able to boot into Vista, but we'll fix that. Instead of manually doing the work, we'll just click the Diagnostics menu item and then choose Run Diagnostics from the menu.
This will scan your computer and then automatically fill in the XP version.. click on the "Manage OS Entries" tab and then click in the textbox for Rename OS Entry, and name it something useful like "Windows XP" or "The Windows That Works"
Click the Apply Updates button and then reboot your computer… you should see your shiny new boot manager with both operating systems in the list!
This is a critical piece of information: Windows XP will be installed on the D: drive, even in Windows XP… so you'll need to keep that in mind when tweaking your system.
You can share information between the drives, but I wouldn't recommend messing with the other operating system's partition too much… it might get angry and bite you. Or screw up your files. What I do recommend is that you store most of your files on a third drive shared between the operating systems… you could call that partition "Data".
Thanks....