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Last active February 7, 2019 07:02
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Trim Enabler for Mountain Lion 10.8.1 (via http://digitaldj.net/2011/07/21/trim-enabler-for-lion/)
# for revert instructions please see http://digitaldj.net/2011/07/21/trim-enabler-for-lion/
# \x51 is changed to \x4d in the script
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
# this is for 10.8.1-10.8.2(?)
# 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
# this is for 10.8.3
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
sudo touch /System/Library/Extensions/
@euler0
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euler0 commented Nov 5, 2012

Thank you, it works perfectly!

@counterpoke
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Yeah, thanks! This enabled Trim support for me in 10.8.3.

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