Q: macOS Sierra Airport Time Capsule Time Machine backup is stuck in "Calculating time remaining..." after backing up 1GB of 60GB. No backups since macOS Sierra upgrade.
Laptop Spec:
OS Version: macOS Sierra 10.12
Product Name: MacBook Pro (Retina, Mid 2012)
Processor: 2.6 GHz Intel Core i7
Memory: 8 GB 1600 MHz DDR3
Graphics:
NVIDIA GeForce GT 650M 1024 MB
Intel HD Graphics 4000 1536 MB
Storage: 212 GB of 512 GB available
Airport Time Capsule Spec:
Storage: 2 TB of 3 TB available.
Software Version: 7.7.7
Issue:
After upgrading to macOS Sierra, Time Machine backups to an Airport Time Capsule no longer complete successfully. Sophos Antivirus was in use, this was uninstalled, after reading various posts about Sophos Antivirus and Time Machine issues and backups being stuck in "preparing backup".
I strongly believe in the use of additional antivirus software for enhanced protection, so I purchased Bitdefender Antivirus for Mac, which includes Time Machine protection, which implies Time Machine compatibility. However, time machine backups still do not complete, and they get stuck in "Calculating time remaining..." after just 1GB gets backed of about 60GB. It remains in this stuck state for hours. Disabling antivirus altogether doesn't appear to help. Leaving a backup to try and complete over night just results in a message in the morning saying that the network connection was interrupted and the backup couldn't complete. As far as I can see, very little actually gets backed up.
I have tried rebooting my mac book.
I have tried restarting the Time Capsule via the airport utility to trigger a verification of the disk.
I have disabled Antivirus software.
I have ensured that the the Airport Time Capsule has a strong network connection and is located very close to the Laptop.
I'm pretty stuck for ideas at this stage and concerned that many people report a similar issue but Apple don't appear to be doing anything about it. An official troubleshooting guide would be helpful to make sure that I've tried everything.
Any help is most appreciated in getting this working again.
Many thanks
Rik
MacBook Pro (Retina, Mid 2012), macOS Sierra (10.12), 3TB Airport Time Capsule (7.7.7)
Posted on Oct 8, 2016 5:58 AM
I figured out that this must be because El Capitain and macOS Sierra are so different, that the Time Machine Backup just gets confused - the time machine backup itself might be different or there's a bug that's confusing it in someway when comparing an existing archive to the current state of the computer. I decided to try and backup the Airport Time Capsule itself, then erase it!
I connected a new empty drive (with 1 TB free) to the Airport Time Capsule and used the Airport Utility disk archive feature. On the Airport utility, select the Airport Time Capsule, click "Edit" then click over to Disks, then you'll see the archive feature.
The archiving took a long time, but it worked and made a backup of my Airport Time Capsule itself. I was then ready to Erase it. After doing a quick erase of the Airport Time Capsule, and then removing the disk from my existing Time Machine setup, then adding it back again, the Airport Time Capsule was ready for its first backup. When I started the backup, it was in the "preparing backup" for only a short time and then started... it passed the 1 GB mark and continued, giving me an estimated time of 16 Hours, but hey at least it works an it should only take that long the first time!
Problem resolved! :-) Hope this helps others who are battling with this problem.
Message to Apple: You guys really need to get on top of this and automatically suggest within the software, if it appears to take too long to at least direct the user to a helpful trouble shooting page with various tips and solutions to common problems. Users understand that sometimes things go wrong, but it's nice to have solutions to hand, rather than ignoring the problem even exists.
Posted on Oct 9, 2016 4:43 AM