Replacing HD portion of Fusion Drive with SSD
I want to replace the HD in my iMac 27" 5k systems Fusion Drive with a SSD.
Can I run this iMac with a 24 G flash drive on motherboard (apparently this flash drive is not yet upgradeable?) and this new SSD (in the place of the HD)
Essentially I would have 2 SSD drives (one big and one small)
How do I set it up after the install?