Answer to: Can I make a fusion drive in my iMac with OSX 10.8.2?I made it work with a 21.5 in. 2011 iMac with a Crucial 256 gb M4 SSD and stock 1 TB HD. I found instructions on the web using the Terminal program. I am running the latest OS and my machine screams now. I activated Trim Support using a shareware program. Even About My Mac recognizes it as a Fusion Drive.