I have win 10 10242 preview on a computer that has Vista on it. I installed win 10 to the second drive so Vista is on one drive and Win 10 is on the other. The dual boot works fine as menu comes up where I select which OS I want to boot from. Vista can see the drive that win 10 is on but Win 10 doesn't see the drive Vista is on. Why is that and how can I fix it.