Sierra and Time Machine

Hi.


So I upgraded to Sierra yesterday morning.


Time Machine has been stuck since.


It's stuck on 'Preparing Backup'.


It's been about 18 hours.


At what point should I worry? And suggestions on a fix?


Don

iMac, OS X Mountain Lion (10.8.1)

Posted on Sep 21, 2016 6:21 PM

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Question marked as Top-ranking reply

Posted on Sep 27, 2017 4:32 AM

I too had this issue.

I updated to High Sierra yesterday and today started backup which was quite painful, as first it took time machine hours to prepare backup and then years to back up for just 125 GB backup..which never happened. Even formating the external drive for time machine.

I have a MB Pro early 2015, with Bitdeffender Anitivirus as well as Malwarebytes installed on it.

I disabled both and stopped indexing of the backup drive.

Started manual backup and it was quite pretty to see it tugging along at good speed.

Now it is showing about an hour for backup to complete.

May be it is because of the first back up as I had previously erased the disc.

272 replies

Nov 1, 2016 11:55 AM in response to Entropee

Thanks to Entropee for the very helpful steps. Unfortunately, my problem takes a different turn at step 6. When I try to open the Data folder, the only thing in the Finder window is 'Macbook Air 2015.sparsebundle', with today's date. When I try to open that file, a window pops up saying 'The following disk images couldn't be opened'.... with the reason 'resource temporarily unavailable'.


Sadly, I have two other issues compounding my problem.


First, I have been away for four months with my laptop, and so I keep getting messages that my Time Capsule couldn't complete the backup. I understand that the fix for that is to delete the 'backups.backupd.InProgress' file, but I have no idea where it is. Advice from my Google searches is simply 'open Time Machine' but I don't know what that means:


(1) I tried clicking on the Time Machine icon on the upper part of my screen to 'enter Time Machine', and on the last date I backed it up (May 31), it says 'Waiting' at the top, with no files listed; so apparently that is where the 'InProgress' file is lurking. How do I delete it? Surprisingly, there are backups in Time Capsule since May 31, even up to yesterday-- why, when it says it can't complete the backup?


(2) The other way I've tried to 'open Time Machine' is to click on the AirPort in the Shared section of my list in the Finder sidebar-- leading to the aforementioned 'sparsebundle' problem.


Second, I updated to Sierra before I returned, so may have the Sophos/TimeMachine/Sierra problem described by others. I have disabled it-- must I actually uninstall it?


Third, I changed ISPs to AT&T and relocated the AirPort to the new router-- I can see it with the AirPort Utility and all seems well there.


Hoping for any advice...

Nov 1, 2016 4:06 PM in response to LOLinox

Each has different phenomena and workarounds in this regard (even though the end results are the same - backup failure and/or very slow operation) so that it is not possible to pinpoint your case. Just for your information, according to my experience (I have both of NAS- and USB-based backups):


1 'MacBook Air 2015.sparsebundle' is your backup file because your backup is on Time Capsule or so called NAS - network attached storage. You cannot open/look into this type of file, which is technically called the image file, by Finder. 'Macbook Air 2015' is your Mac's name which you assigned days ago.


2 You don't have the 'backups.backupd.InProgress' file because the file would be created if the backup were generated on a HDD directly connected to your Mac via USB. The InProgress file is only temporal during each backup operation and automatically deleted/expanded into a new backup set of folders/files once the backup operation has been completed. The folders/files can be manipulated by Finder but it's not recommended at all. The 'backups.backupd' part depends.

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Sierra and Time Machine

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