Prompt Title: External Harddrive setup as Fusion Drive on Mac

Yes, you can set up an external hard drive to function as if it were part of the built-in hard drive on a Mac mini by creating a Fusion Drive. A Fusion Drive is a hybrid storage system that combines a solid-state drive (SSD) and a hard disk drive (HDD) into a single volume that appears as one drive to the user.

To set up a Fusion Drive with an external hard drive, you will need an external SSD and the Terminal app. Here are the steps:

1. Connect the external SSD to your Mac mini.
2. Open Disk Utility, select the external SSD and click on the "Erase" button.
3. Give it a name and choose the "Mac OS Extended (Journaled)" format.
4. Open Terminal and enter the following command:

sqlCopy code
diskutil cs create Fusion disk1 disk2

Replace "disk1" with the identifier of the external SSD and "disk2" with the identifier of the internal hard drive of your Mac mini. You can check the identifiers in Disk Utility.

5. Wait for the command to finish creating the Fusion Drive. This may take some time.
6. Once the Fusion Drive is created, you can use Disk Utility to partition and format it as a single volume.

That's it! Your external hard drive is now part of the Fusion Drive and functions as if it were part of the built-in hard drive on your Mac mini.