mac os lion 命令行开启 trim
1.备份sudo cp /System/Library/Extensions/IOAHCIFamily.kext/Contents/
PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage
/IOAHCIBlockStorage.original
2 .
sudo 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
3.
sudo kextcache -system-prelinked-kernel
sudo kextcache -system-caches
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