I have windows7 and it worked great in dual boot with my Ubuntu Linux. I had it on dual boot for about6 months until my win7 crashed. I was able to save most of my file on Linux and I used it for the past week or so . I final was able to obtain a win7disk to reinstall. all was good until I tried to go into Linux and retrieve my windows flies, my dual boot was missing.I read about it on other forums but no results. I don't wanna lose my Linux because it has my important files on it. any other questions please feel free to email me at Robert.brown.ak@gmail.com