Late 2012 Mac Mini D.Y.O. Fusion Drive

All is fine now.
I redid the process from scratch.
The Mac OS X recovery completed this time. I guess apple was having server issues since yesterday night.
The recovery installed 10.8.1 and I had to update again.

I had tried to use the mountain lion installer on a USB key but the key doesn't boot on the Mac mini.

Has anyone tried making a Fusion Drive with Yosemite on the same Late 2012 Mac mini?

broadbean said:

Has anyone tried making a Fusion Drive with Yosemite on the same Late 2012 Mac mini?

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I'm running Yosemite on a DIY fusion, but the drive was built before I upgraded to Yosemite.