I have installed Mint 12 in dual boot with Vista on my Acer 5310 (2 partitions NTSF). Installer appear very good, reduce second partition and create the new one EXT4 where install Mint 12. Modify the MBR, install GRUB, ect. Perfect! Vista run without problems like Mint. Well, but now I have the problem to return back to the original system with only Vista without loose data. Why there is not an unistaller that, with the installation log, help users to return back? Why I need to do this manually with serious risk to loose data???