I partitioned off my computer and had XP on one Drive and Vista on the other side. I used Vista as my main operating system and had the system log onto that one first. Then one day I someone switched me over to XP. Now Vista is now were to be found, I can't find it at the beginning when I F8, its like its disappeared does anyone have any ideas of what might have happened or where it is?
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Try using EasyBCD, it's free and should find your Vista install and let you re-set the boot screen.