In the meantime, you’re free to accomplish the same thing usingTerminal.
A Fusion drive is actually two drives in one.
Likewise, less often used data is demoted to the slower, but significantly larger, hard drive section.
Western Digital and Samsung
Drive manufacturers offer many such drives, so it would not have represented anything new.
All you need are an SSD and a platter-based hard drive.
You’ll also need OS X Mountain Lion (10.8.2 or later).
Older versions of Disk Utility won’t work with Fusion Drives.
While this is correct, it is not the whole story.
The Disk Utility app is a GUI wrapper for the existing command line program called diskutil.
The special version of Disk Utility that ships with Fusion-enabled Macs have the core storage commands built-in.
Updated versions of macOS have all the core storage commands available for any Mac, regardless of the model.
But the Fusion technology does not require or test for the presence of an SSD.
You could also add a 7,200 RPM drive to a Mac that is equipped with a 5,400 RPM drive.
You get the idea: a fast drive and a slower one.
As an experiment, we tried creating a working Fusion drive that consisted of two partitions.
One partition was located on the faster SSD; the second partition was located on a standard hard drive.
While this configuration worked, we do not recommend it.
Be sure to create a currentbackupof all the drives on your Mac uses before proceeding.
Both drives should be formatted as a single partition using Disk Utility.
Once the drives have been formatted, they will appear on your desktop.
Be sure to note each drive’s name, because you’ll need this information shortly.
Once the process is complete, they will become a single volume named Fusion.
LaunchTerminal, located at /Applications/Utilities/.
In the command prompt, enter the following:
Pressenterorreturnon your keyboard.
You will see a list of drives attached to your Mac.
They will have names you’re not used to seeing, such asdisk0ordisk1.
You will also see the names you gave the volumes when you formatted them.
Locate the two drives by the names you gave them when they were created.
In our case, we’re looking for Fusion1 and Fusion2.
Write down the disk names, as we will need them later.
In our case, they aredisk0s2, anddisk3s2.
The first partition is called EFI and is hidden from view by theDisk Utility appand the Finder.
We can ignore the EFI partition here.
Now that we know the disk names, it’s time to create the logical volume group.
Once again, we will use Terminal to execute the special core storage commands.
The process of creating the logical volume group will erase all data on the two drives.
Be sure to have a currentbackup of the dataon both drives before you begin.
Also, pay attention to the gadget names you use.
They must exactly match the name of the drives you intend to use in your Fusion drive.
Here is an example of the Terminal output:
Notice the UUID that was generated: DBFEB690-107B-4EA6-905B-2971D10F5B53.
That’s quite an identifier, definitely unique and definitely not brief and memorable.
Be sure to write it down, because we will be using it in the next step.
So far, we discovered the disk names we need to start creating the Fusion drive.
We then used the names to create a logical volume group.
Now we’re ready to make that logical volume group into a Fusion volume that the OS can use.
Be sure to substitute your own values, then pressenterorreturnon your keyboard.
Once Terminal completes the command, your new Fusion drive will be mounted on the desktop.
At this point, you might treat the drive like any other volume on your Mac.
you’re able to install macOS, or use it for anything you wish.
