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I have Time Machine backing up to an Airport Shared drive. Sometimes I forget to check whether a backup is in progress and I just close the lid.
Will that screw up the backup? or TM will pick up from where it left when I open the lid a few hours later?
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I believe it just continues where it left off. I never pay any attention to whether it's running or not when I put the computer to sleep and have never suffered for it (that I know of, anyway).
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Not the Airport-drive, but I had a hard drive plugged in and accidentally closed the lid.
When I realized, came back and checked the Time Machine had completed its work and the computer had gone to sleep.
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I thought I read somewhere that it would mess up...something. Perhaps not.
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The fan comes on on my laptop when TM is doing its thing. Anybody else?
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That's like asking what happens to the refrigerator light when you close the door. It's one of the mysteries of life...