I have a PC with 2 HDD. One WinXP OS is already installed on one HDD, and the other WinXP OS is already installed on the second HDD from my old computer. I want to setup the dual boot choice so that I can choose which already installed HDD Win XP OS to start up ( ie at the pasword/user window slection screen) and have the option to boot from either one satisfactorily? Cannot find much information on this for 2 already installed XP OSs on 2 separate HDDs. I have checked each HDD/XP OS separately so I know that each HDD and XP OS works properly as a stand alone, Any help gratefully received.