Having an operating system one one partition and apps installed on another is not in itself a problem provided that the apps were installed under the operating system. But - you have apps on a different partition which were installed using another op sys. This is almost certainly not viable - when you run the install a lot of associated data and changes are made to things like runtime files, registry entries etc and these changes need to be made within the op sys which is going to be used to run the apps. By all means try it but I think you are very unlikely to find it workable.