Thanks Terry for your guidance. However, I, already had Win xp professional sp2 and Win 7 Ultimate in two separate Drives in my PC. Now, when I re-installed win xp sp2, the booting option vanished. Hence, with a view to get back the booting option page , I attempted downloading and installation of the up-to-date version of EasyBCD. At this stage, while the EasyBCD has been downloaded successfully in win xp prof. sp2 operating system, but, the same is NOT responding to my installing attempt i.e. the exe file is not responding to mouse clicks. With the above problem I need your help and guidance so that with the help of EasyBCD I may be able to bring back my Boot Loader Page with option to boot either of the operating systems i.e. win xp or win 7 .