Try TimeMachine Editor (free) to impose a "manual" schedule outside Time Machine. It won't technically "fix" your problem with native Time Machine, but it might force your way around it. At the minimum, you may get a more informative error message if it also fails.
> On Jul 30, 2017, at 1:40 PM, Dinse, Gregg (NIH/NIEHS) [C] > <[email protected]> wrote: > > Hi, > > About 2 weeks ago, I upgraded from Yosemite (10.10.5) to Sierra (10.12.6). I > believe that this is when my trouble started. > > Until recently, whenever I looked at the Time Machine panel in > Preferences.app, it would show times for the latest backup and the next > backup that were roughly an hour apart, as expected. Now when I look, it has > often been several hour (maybe even 12 or more) since the last backup. If I > tell it to backup now, it backs up. However, an hour from then, the next > backup time often jumps by an hour but the latest backup time stays the same. > In some cases, I think it performs a backup eventually, but certainly not > every hour. I don't recall if it has gone for days without a backup, but I > think it has. > > Does anyone know how to fix this? My disk has plenty of space left. > > I have tried several suggestions that I found online, but so far none have > helped. I unchecked and then rechecked the Back Up Automatically button. I > deselected and then reselected the drive used for Time Machine backups. I > rebooted many times. I ran the following command from Terminal: > > sudo defaults write /Library/Preferences/com.apple.TimeMachine > RequiresACPower 0 > > Supposedly all of these "fixes" have helped some people with this problem, > but they have not worked for me. > > In case something was corrupt in the 10.12.6 combo update, I ran that again. > Things seemed to work for a few days, so I thought that fixed it, but now the > problem is back again. Does anyone have any other suggestions? > > Thanks, > > Gregg > > _______________________________________________ > MacOSX-talk mailing list > [email protected] > http://www.omnigroup.com/mailman/listinfo/macosx-talk _______________________________________________ MacOSX-talk mailing list [email protected] http://www.omnigroup.com/mailman/listinfo/macosx-talk
