I have a Fusion Drive on my iMac and I have a 200Gb Bootcamp on it. I am running El Capitan. Anyway, I read somewhere (perhaps I misinterpreted it) that I can have only 2 partitions on my Fusion Drive (in other words, splitting the HDD portion into two partitions). Since I already have a Bootcamp partition, would it be fine to add an additional partition in the remainder of the Fusion Drive? And would it split just the HDD? Basically, I would like to make a 'storage' HDD-only partition on my FD where I can keep the files I use often, but that don't require fast access without them getting on to the SSD. Anyone has any experience with that? Thanks.