Well, I have acquired a SSD Vertex 3 for my mini mid-2011 Lion OS. I have enabled TRIM compatibility, but I am unable to enable noatime with the .plist in /Library/LaunchDaemons file. Is it necessary to enable it (noatime), with Lion or is not? My com.noatime.root.plist is: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>Label</key> <string>com.noatime.root</string> <key>ProgramArguments</key> <array> <string>mount</string> <string>-uwo</string> <string>noatime</string> <string>/</string> </array> <key>RunAtLoad</key> <true/> </dict> </plist> But it doesn't work. I also gave root permises with: sudo chown root:wheel /Library/LaunchDaemons/com.noatime.root.plist but when I writed: mount | grep " / " only appears: /dev/disk0s2 on / (hfs, local, journaled), as you see, it doesn't appear noatime. Any ideas, please? Thank you in advance.