Okey i have one more qeustion if i chose custom install over upgrade is my data on d, e still safe or not? https://www.google.rs/imgres?imgurl=http%3A%2F%2Fwww.fixedbyvonnie.com%2Fwp-content%2Fuploads%2F2013%2F07%2Ffixedbyvonnie-virtualbox-windows-8-1-custom-install-or-upgrade.png&imgrefurl=http%3A%2F%2Fwww.fixedbyvonnie.com%2F2013%2F07%2Fhow-to-install-windows-8-1-public-preview-in-virtualbox%2F&docid=BMSqdxsb46dXDM&tbnid=muPO5PCZMCWVuM%3A&vet=10ahUKEwiivc3Ki4vcAhWGHJoKHRPaArYQMwg_KAEwAQ..i&w=1042&h=864&bih=662&biw=1366&q=windows%208.1%20custom%20install&ved=0ahUKEwiivc3Ki4vcAhWGHJoKHRPaArYQMwg_KAEwAQ&iact=mrc&uact=8