Enable TRIM SSD in Mac OS X 10.6.7
You probably know that Mac OS X Lion will add TRIM support for SSD’s, but what can you do right now if you’re on 10.6? If you’re brave, you can use this unsupported hack that enables TRIM for most SSD devices under Mac OS X 10.6.7.
The app is called TRIM Enabler and it works by loading a kernel extension from MacBook Pro 2011 models (with TRIM support) into your Mac OS X kernel, this forces TRIM to be enabled. All you have to do is click on “Patch” to enable TRIM, but the current version does not support one-click disabling, so if something goes wrong, you’ll have to boot into Safe Mode to disable the extension manually.
WARNING: This is completely unsupported software. We are not responsible for any damage or data loss that may result from enabling this feature. Always have a backup of your data, and proceed with caution and at your own risk!
I have an SSD in a new MacBook Air and I have not tested this, nor do I have plans to test it. Personally, I’m going to wait for official support from Apple, there’s likely a good reason they left it out of 10.6.7.
Update: TRIM Enabler v1.1 has been released that includes backup and restore functionality, the download link has been updated to this version.