How many partitions can you realistically put on a Mac with fusion drive? I have a 2014 Mac mini with a 1TB Fusion drive 1.4Ghz (i added the 1TB and 128GB ssd - both apple branded) aftermarket from the stock 500GB and did the createCoreStorage UUID jhfs+ Macintosh HD 100% command to create the fusion drive. I wanted to do a windows partition + 2 macOS partitions El Cap + Sierra According to an Apple KB it says only one partition can be created, but Iam actually able to create as many as needed it appears. So I'm wondering if there is something wrong with my fusion drive? Disk utility & System profiler see it as a fusion drive and running the diskutil cs UUID command states Fusion drive is enabled. No complaints, just want to make sure if i do partition the fusion drive I'm still actually able to use it as a fusion drive.