monline

Apple has added TRIM support for SSD drives in the 10.6.8 patch for Snow Leopard and of course 10.7.* (Lion) has TRIM support too. Unfortunately Apple decided to enable TRIM support only for Apple shipped SSD drives, so people buying an SSD from any other manufacturer have to enable this support themselves.

Fortunately a friendly developer created an app (Trim Enabler) that makes this job a very easy task. I’ve tried Trim Enabled v2.0 (Beta 4) and simply running it, flipping the switch to “On” and rebooting didn’t do it just yet. After the reboot TRIM support was still not working.

Running the suggested kextcache -system-prelinked-kernel and kextcache -system-caches commands and rebooting did work though.

Just for reference: my Mac is a 2006 MacBook Pro (model ID: MacBookPro2,2) with Mac OS X 10.6.8 and a Kingston SNVP325-S2/256GB SSD.