I used Trim Enabler Utility on my very first installation, open the switch to ON ,reboot, rebuild kernelcache via terminal and reboot again and the Trim support worked.
I am using Chameleon and Kernel Flag kext-dev-mode=1
On 10.10.1 update though i forgot the Trim issue,so i did the installation but the system didin't hang on boot,don't know why.Worked like a charm.
The Trim of course was set to OFF and tried the same trick with Trim Enabler utility but with no success . Tried 3-4 times to reboot but nothing happened.
So i uses method 2--Reboot and everything went just fine.
What's the procedure i have to do every time before an update to ensure that nothing will go wrong ?
I mean, do i have to disable Trim ( don't know how...) update---Run method 2 again and rebuild kernel cache and reboot ?