Thread: Keeping Mac Air
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Member Since: Jul 08, 2012
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Mac Specs: cMBP 13" mid-2012, 2.9 ghz i7, 8gb ram, 256 gb SSD,

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Originally Posted by JohnCL View Post
You can change your system preferences to set the laptop to never sleep. Start your backup and leave it be.

Just so you know, my MacBook Air is never opened and it runs for weeks at a time. It isn't going to overheat as long as the fan exhaust isn't blocked.
I don't know about previous versions of OS X but you cannot choose to stop your laptop from sleeping in Mountain Lion. There is simply no "never" option for sleep.
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