I got an error whilst installing Windows 10 from .iso file as virtual machine via Parallels 9 on OSX 10.10 which read something like: Media driver missing
. It leaves you in a loop which requires you to add the drivers. But you cannot install any cause there are no suggestions.
Now the main issue seemed that the iso wasn't on a bootable device which is what most sources say you need to do. Obviously that seemed like an unneeded step and i got the installation going. Mostly because you were already inside the installation that had been booted in the first place.
Software i use: OSX 10.10 (latest) Parallels 9 (latest updates, i know Parallels 10 is out) Windows 10 iso from http://preview.windows.com VM setup with iso from external HD (NTFS) and locally stored.
So what to do?
(see my answer below)