Optimize non-Apple SSDs on OS X. (Run the following commands in the terminal.)
Enable TRIM support
Check IOAHCIBlockStorage version:
open /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/version.plist
Backup the original driver:
sudo cp /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage.Original
Modify the driver:
sudo perl -pi -e 's|(\x52\x6F\x74\x61\x74\x69\x6F\x6E\x61\x6C\x00{1,20})[^\x00]{9}(\x00{1,20}\x54)|$1\x00\x00\x00\x00\x00\x00\x00\x00\x00$2|sg' /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage
Clear the system caches:
sudo kextcache -system-prelinked-kernel
sudo kextcache -system-caches
sudo touch /System/Library/Extensions/
Restart the mac:
Set/Unset SMS
To check SMS status:
sudo pmset -g
if return 1 enabled, if 0 disabled
To disable:
sudo pmset -a sms 0
To enable:
sudo pmset -a sms 1
Set No Access Time
Create plist file:
sudo vim /Library/LaunchDaemons/com.noatime.plist
Then paste this:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>com.noatime</string>
<key>ProgramArguments</key>
<array>
<string>mount</string>
<string>-uwo</string>
<string>noatime</string>
<string>/</string>
</array>
<key>RunAtLoad</key>
<true/>
</dict>
</plist>
Save and reboot then checking with command:
mount | grep " / "
you should see /dev/disk0s2 on / (hfs, local, journaled, noatime).
On OSX 10.11+ can enable TRIM with this command:
Thanks!