Q: Why does time machine stop working when my iMac sleeps?
Just recently every time I leave the iMac for a while and it goes to sleep, upon awaking there is a string of messages that the external Seagate 2T backup disk was not ejected properly when shut off. Also I check and see that time machine has not backed up since it went to sleep, often for twelve hours or so. There is not a time shown on the messages, but looks like one is generated every hour.
When I waken the iMac and open the time machine icon at the upper right corner, I see the last backup was prior to it going to sleep and it starts a new backup which completes.
I ran disk utility on the external drive and it found no problems.
I've updated ElCapitan each time a new update was available. Now running 10.11.3.
Can't find anything like this in any of the forums.
Any suggestions??
iMac with Retina 5K display, OS X El Capitan (10.11.2), 8 GB, Late 2014, Airport Extreme,
Posted on Feb 5, 2016 10:21 PM