Safely enable Trim on Yosemite and El Capitan!

Safely enable Trim on Yosemite and El Capitan!
July 2, 2015 Oskar

I am very happy to announce the new method to enable Trim on OS X Yosemite and El Capitan.

Using Disk Sensei or Trim Enabler, you can now enable Trim on OS X Yosemite (10.10.3 or later) and OS X El Capitan without disabling kext signing!

Thanks to new functionality introduced by Apple, I’ve been able to develop a driver that can enable Trim without modifying your system in any way. This is a huge breakthrough for Trim on OS X!

This means that:

Disabling kext signing is no longer necessary!
The “gray boot screen/stop sign” issue is gone!
Your system is no longer modified in any way!
Trim will no longer reset on updates!

This is the easiest and safest way to enable Trim on OS X. It is even better than using the new built in trimforce command, since that requires 10.10.4 and may require disabling system security on El Cap.

Here’s how to enable Trim safely on OS X Yosemite or El Capitan:

Disable Trim with your current Trim-tool of your choice (if you already have it enabled)
Download Disk Sensei (if you have it, update to version 1.2)
Open Disk Sensei and select Tools -> Trim
Enable Trim and reboot
Done!

Safe Trim Enabling is part of Disk Sensei update 1.2 and Trim Enabler 3.1. Full change logs:

Disk Sensei 1.2:
– Revamped Trim Enabling: Disk Sensei now uses a custom Cindori driver to safely enable Trim for 3rd party drives!
– Added OS X El Capitan support
– Added OS X 10.10.4 support
– Fixed an issue where Health (S.M.A.R.T) updates would trigger heavy drive load
– Fixed an issue with the center label in the Visual feature
– Fixed an issue with the Trim switch
– Added 7-day trial mode

Trim Enabler 3.4:
– Revamped Trim Enabling: Trim Enabler now uses a custom Cindori driver to safely enable Trim for 3rd party drives!
– Added OS X El Capitan support
– Added OS X 10.10.4 support

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