昨天升级10.9.4，发现之前的指令代码失效了。今天问题解决了，分享给大家。
# 1、备份 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
#2、修改文件
sudo perl -p0777i -e 's@((?:Rotational|WakeKey\x0a)\x00{1,20})APPLE SSD(\x00{1,20}[QMT])@$1\x00\x00\x00\x00\x00\x00\x00\x00\x00$2@' \
/System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage
# 3、创建系统内核拓展文件夹
sudo touch /System/Library/Extensions/
#4、重启
至此问题解决。
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