Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
"Make sure you read this carefully:
No matter which method you use, once you have both an SSD and a platter-based drive installed in your Mac mini, you should not use the Disk Utility in your Recovery Partition on those drives; it will see those drives as a “broken” Fusion array and try to repair it, destroying your data in the process."

Oh, brother is this a screwup on Apple's part.

Talk about stupidity, designed right in.

I can see quite a few erased drives over this!
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.