Has anyone been successful at doing this. I have not , actually I tried using bootcamp and created a partition on my Fusion Drive and could not install windows on it. I called Apple Care to help me with this issue and 2 Sr specialist later and a ton of Terminal commands I had to rebuild my drive back with all the fusion technology. I am now scared to attempt trying it I have a late 2015 Imac 5K with a 2tb Fusion. The problem exists on where the Windows OS is placed on the drive. I don't think Apple has figured this out yet foe Windows 10. Anyone do this I would like to her success stories before I attempt again. Thanks in advance.