Time machine automatic backups don't work


Gerri

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My Time Machine backup stopped doing automatic backups. If I start a manual backup, it works fine, and it schedules the next backup. But when the time comes, nothing happens. It does not even try to do a backup. I am using Yosemite (10.10.5) on a late 2013 iMac. I have tried deselecting and unplugging the external backup drive, throwing out the com.apple.timemachine.plist file. Then I reselected the external drive. This made no difference. Any help would be appreciated.
 

Cory Cooper

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Hello...sorry we didn't respond until now.

Sounds like you have done most of the basic troubleshooting steps already.

-I assume your iMac is set to never sleep?
-Is Put hard disks to sleep when possible unchecked in Energy Saver preferences?
-What brand/model/capacity is the external drive?

C
 
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Gerri

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Thanks for trying to help. I have actually tried all of that and even bought a new backup external drive. I have been working with an Apple technical specialist who in turn is working with Apple engineers on the problem. I'll post a solution when they have found out something.
 

Cory Cooper

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No worries.

If I think of anything else in the meantime I will let you know.

Definitely keep us in the loop, as we are interested. ;)

C
 
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