Hi. I like to add a Mac OS X disk to my current set up which is composed of Win XP/Win7-32 bit, Win7-64 bit and data disks (three disks). Because the VistaBootPro 3.3 does not recognize Mac drive, I want to switch to easyBCD. However, I am not sure what will happen when I un-install the VistaBootPro and install the easyBCD. Has anyone tried the similar method? What will happen if I just install easyBCD (before removing the VistaBootPro)?