How to dual boot Windows XP and Windows 7 (XP installed first)
James Bannan14 January 2009, 10:00 AM
Got your hands on the Windows 7 beta and want to dual boot it alongside Windows XP? Here's our step-by-step tutorial to get you up and running with Microsoft's latest OS.
Page 2 - Step 1 - Introduction

Scenario: You want to install Windows 7 on your PC alongside your XP installation, on the same drive. You have already installed XP.
Tutorial Summary: We're going to shrink the Windows XP partition on the hard disk and create enough space for an installation of Windows 7 Beta Home Premium. There are two easy methods of doing this - using the GPartEd Live CD and the DISKPART utility on the Windows 7 DVD. On some systems, depending on the primary storage controller, We'll then install Windows 7 and use the EasyBCD utility to modify Windows 7's bootloader to get XP loading properly.
This tutorial was tested on a VMWare Workstation 6 virtual machine.