

Here is what my idea is at the moment: It does start the erase of deleted files on the SSD by a trim command form the OS. Click on FIX which will create your Fusion drive Click on your SSD which will bring up the IGNORE/FIX screen
TRIM ENABLER MAC SIERRA INSTALL
Back out of Disk Utility - back to the OS X Utilities Menu and select Reintall OS XMavericks will install onto your SSD and as you reinstall or migrate apps and your data, Core Storage will keep writing to your SSD until is fills up then "spill" over to the HDD. The Recovery HD will be on your Fusion drive after you install OS X.

Oxygen forensics suite trialīut you won't see it in the Startup Manager if you ever restart using the Option/Alt key. Most files are deleted off my HDD which is used for LAN file storage. So the built-in Garbage Collection on my SSD is good enough.It's actually easier than what you wrote.
TRIM ENABLER MAC SIERRA FULL
Restart and press the Option/Alt key and select your thumb drive so it boots into the Recovery HD Do a full system back up.Then, all you need to do after you install your SSD into the Mini is: □Download the OS X Recovery Disk Assistant from Apple (it also works with Mavericks) and use a 4GB thumb drive to create a Recovery HD on that thumb drive.
TRIM ENABLER MAC SIERRA DRIVER

You would have to use Terminal (diskutil) to manage them. In OS X Mavericks, that bug has been fixed and clicking IGNORE will change the RED lettering to black and let you manage each drive separately.TRIM aids in the reduction of write amplificationand some improved performance.
