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According to EveryMac the latest OS that your Macbook can run is 10.7.5 (Lion). A big focus on the preceding release 10.6 (Snow Leopard) was performance. It was the OS update that Apple advertised as having "no new features" as the work was focused on refining and improved the existing ones. Reducing the memory footprint, removing legacy code, the Finder ...


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You don't need special hardware for this. Plug in both headphones, then open Audio Midi setup from /Applications/Utilities. Click the plus in the lower left corner and choose "Create Multi-Output Device." Check the checkboxes beside both headphones in the new panel on the right. If you want to rename it, you can double click the new entry in the list on the ...


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If your Mac originally came with OS X Lion, is capable of doing internet recovery, and you have a WPA/WPA2 network, then booting using Internet Recovery will enable you to install OS X Lion. To boot into Internet Recovery, follow these steps: Shutdown your Mac Press the power button Quickly release it and hold down Command-Option-R Keep on holding it until ...


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What you have here is a model number, not a "Serial Oder". You can look up Mac model numbers here, for example: http://www.everymac.com/ultimate-mac-lookup/?search_keywords=MD760F%2FA


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Had similar problem, so took it to Genius Bar for investigation. Turned out to be the battery charger sensor module, which is built into the battery level indicator on the side of the Macbook (the 5 green light thing). It was malfunctioning, basically telling the Macbook that any battery was dead, even if the battery was good. YMMV.


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I've just gone through two brand new MacBook Pro Retina 15's, "fresh" from Apple Store, both of which were giving me only 3-4 hours on a fresh charge. After resetting NVRAM and SMC, I now get 5-6 or more hours. If you buy a new MacBook -- and are getting less than 5 hours per charge -- try resetting your NVRAM and SMC. How to Reset NVRAM: Shut down the ...


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If you are using Juno Pulse VPN client, /etc/hosts gets over-written by /etc/jnpr-pulse-hosts.bak



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