Time Machine not working in MacOS Sierra

Tony Lush

macrumors newbie
Original poster
Oct 13, 2016
5
0
Bristol
Hi
Can anyone help me? Just loaded sierra but Time machine now does not work! It loads on the desktop and says preparing to backup but does not actually back up?

Tony
 

Cordorb

macrumors regular
May 8, 2010
210
47
I backup to a local NAS unit it may take some time.

You can always test using a small partition or external disk with only a few files.

looking at the console error log right now with Sierra may not be the first thing to try as it is very active but you can try.
 

Les Kern

macrumors 68040
Apr 26, 2002
3,063
76
Alabama
I have had that happen in the past, not specifically with Sierra though. The only way I could fix it was to reformat and start fresh. I never discovered why it wasn't working. Sidebar: I really didn't need the hourly backups and other cron controllers were deemed too unreliable, so I decided to stick with Carbon Copy Cloner using the Safety Net, which caches modified and deleted files.
 

satcomer

macrumors 603
Feb 19, 2008
6,287
928
The Finger Lakes Region
The permissions changed so you have to take ownership on the drive again via terminal.

Run the /Applications/Utilities/Terminal.app and run the first command:
Code:
diskutil list
This command will show you the disk identifier for your Time Machine share that's mounted! You will use this in the next command example.

Code:
sudo diskutil enableOwnership /dev/disk1s2
Then this will take ownship on the Time Machine share, you just have to use your own Time Machine share name in the command!
 
Last edited:

Cordorb

macrumors regular
May 8, 2010
210
47
there is a terminal command to make Time Machine run at a higher level but it is set low to let you get other work done.

I need to temp disable kaspersky if i need it to finished faster
 

DFWHD

macrumors regular
Aug 6, 2011
130
20
I backup to a Mac Mini server running the Server OS on my home network and the first few backups after Sierra were slow and painful. It seemed like they were forever looking for the backup disk. I just let it do it's thing and now it's running as expected.
 

halofan56

macrumors newbie
Oct 23, 2015
13
1
Hi
Can anyone help me? Just loaded sierra but Time machine now does not work! It loads on the desktop and says preparing to backup but does not actually back up?

Tony
I found in my case to disable any AV software, ClamAV for example. I have to turn off ClamAV Sentry and it works a lot better.