TRIM on Mavericks

TRIM on Maverick for all SSDs in macOS

TRIM can be enabled by using the following Terminal commands, copy these commands and run them in Terminal.

Backup the file that you’re about to patch
# cp /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/
Contents/MacOS/IOAHCIBlockStorage /IOAHCIBlockStorage.original

Patch the file to enable TRIM support
# perl -pi -e ‘s|(\x52\x6F\x74\x61\x74\x69\x6F\x6E\x61\x6C\x00).{9}(\x00\x51)|$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 kext caches
# kextcache -system-prelinked-kernel
# kextcache -system-caches
Important: reboot your Mac!

To disable TRIM support in the future
# perl -pi -e ‘s|(\x52\x6F\x74\x61\x74\x69\x6F\x6E\x61\x6C\x00).{9}(\x00\x51)|$1\x41\x50\x50\x4C\x45\x20\x53\x53\x44$2|sg’ /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/
Contents/MacOS/IOAHCIBlockStorage