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Enable TRIM in OS X 10.8.2
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| Enable TRIM on non-Apple SSDs in OS X 10.8.2 Mountain Lion. | |
| WARNING: This is ONLY tested on 10.8.2, and NOT earlier or later versions. YMMV. | |
| Technical note: The driver changed in 10.8.2 and similar perl commands that worked in earlier OS X versions did not work for me once I updated to 10.8.2. | |
| Run the following commands in Terminal… | |
| 1. 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-backup | |
| 2. 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}\x4D)|$1\x00\x00\x00\x00\x00\x00\x00\x00\x00$2|sg' /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage | |
| 3. 2 commands to clear the system caches to enable OS X to pick up the modified driver | |
| sudo kextcache -system-prelinked-kernel | |
| sudo kextcache -system-caches | |
| 4. Restart the Mac |
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Has this been tested on 10.8.2 12C60?