I would like to create a Fusion Drive from my SSD and HDD both installed inside my MacBook Pro 15" Mid 2012. I've read an article online which said that in order to do that, I'd need to boot Mavericks from an external USB drive. So I've picked a 64 GB USB stick and partitioned it in two, 8 GB for the installer and the rest for the operating system to install to. I've managed to create the USB installer of Mavericks using Unibeast, the installer boots without any problem, it installs normally but when I reboot I get a stop sign with a spinning wheel under it. How can I solve this problem?
The tutorial I'm trying to follow to create the Fusion drive is this one: Manually Create an Apple Fusion Drive on Mountain Lion/Mavericks/Yosemite
I need to create a Fusion drive from the 2 internal drives (240GB SSD and 1TB HDD). On the SSD I already have installed El Capitain and I used the HDD to store files. Now I've seen that you can merge this two in a single LogicalVolume and OS X will see it as if it were a Fusion Drive.