Macenstein

You may remember my AWESOME article about replacing my MacBook Pro’s optical drive with an SSD drive a while back. You may also remember that for some reason, Apple seems to want only THEIR OEM SSD drives to perform flawlessly out of the box, and if you want to enable TRIM support on your 3rd party SSD drive (TRIM is the technology that helps keep your SSD healthy and keeps its write speeds up), you may need to manually enable TRIM with the wonderfully named (and free) TRIM ENABLER app (please check with your drive’s manufacturer first before doing so). But what you might not realize (and what I FORGOT) was that even if you DO enable TRIM support with TRIM ENABLER, there’s a very good chance that each time you run Software update and it updates your Mac’s OS, it may very will disable TRIM support again, and you’ll need to re-run TRIM ENABLER.

So yeah, I just realized that for the past 4 or so months I haven’t had TRIM going. Anyway, to see if TRIM is indeed working on your SSD drive, click on the APPLE logo menu in your toolbar at the top left of your screen, then choose About this Mac and hit System Information (or just open System Information in your Utilities Folder. From there, click on the Serial-ATA section in the left pane of the window, and scroll down in the right bottom pane until you see your drive’s information.

Whoops! TRIM isn't active anymore

If it says “NO”, then head on over to Groths.org and download the latest build of TRIM ENABLER. Run it.

Flip that switch. (You will likely need to restart your computer at this point)

HOORAY!

Sweet. It’s working! But let’s run TRIM ENABLER one more time to make sure all is well.

Yup, looks like we’re back in business.