Time Machine Backup won't complete

[Bill Forest]

Hi all,

I have an imac, and I cannot get Time Machine to complete a backup since I installed Mojave. Time Machine worked fine under High Sierra.

I am running 10.14.6.

When I start a backup, everything starts off fine. It goes through Preparing, and then starts backing up. However, it gets part way though (usually to around 20G) and then just hangs. There are no error messages, and it doesn't give any info that things have stopped, except for the progress indicated on the Time Machine Prefs windo. After reading some online suggestions that perhaps it was just slow, I waiting 19 hours (with energy settings set to not allow it to sleep), but it never got any further on the backup process.



Things I have tried:

• I do not have Nektony AppCleaner installed, as I've read it can cause problems
• resetting the Power Manager
• reset the PRAM
• started up in Safe mode, then restarted normally
• ran Disk Utility/First Aid on iMac HD, as well as the external backup drive
• erased and reformatted the external drive (MacOS Extended Journaled)
• tried a different external drive, and reformatted that drive (MacOS Extended Journaled)
• erased and reformatted external drive as (MacOS Extended, Case sensitive, Journaled)
• Looked for errors in Terminal (see attached)
• looked for more info in Console (although I know very little about Terminal or Console)

None of the above made any difference. I still cannot get it to complete a TM backup. I have an RTF file with info from Console HERE (I took a screenshot of part of it--below). [/QUOTE][/QUOTE]

Maybe someone can tell me if there is actionable info here?[/QUOTE]
Thanks for any guidance you can give.
Bill

 

[Partron22]

When this happens to me, I make a total backup on a fresh drive with Super duper!
Test that backup. Think about what I absolutely need from the TM drive, and copy it somewhere safe, if possible.Then I format the TM partition and start a fresh TM backup on it.
Time Machine flakes out on me a couple times a year, and the only recourse appears to be to reformat and start over. TM is great for recovering that last hour before the cat walked over your keyboard, or you did extensive and foolish global search and replace, but I simply do not trust it as a genuine backup system. It's burned me too many times; so I still do weekly/monthly real backups with reliable backup software to a variety of different drives that have proven trustworthy.
I like and use Time Machine, but it is not a reliable one stop backup solution.

Save what you can, and learn from your annoying debacle.

 

[Bill Forest]

When this happens to me, I make a total backup on a fresh drive with Super duper!
Test that backup. Think about what I absolutely need from the TM drive, and copy it somewhere safe, if possible.Then I format the TM partition and start a fresh TM backup on it.
Time Machine flakes out on me a couple times a year, and the only recourse appears to be to reformat and start over. TM is great for recovering that last hour before the cat walked over your keyboard, or you did extensive and foolish global search and replace, but I simply do not trust it as a genuine backup system. It's burned me too many times; so I still do weekly/monthly real backups with reliable backup software to a variety of different drives that have proven trustworthy.
I like and use Time Machine, but it is not a reliable one stop backup solution.

Save what you can, and learn from your annoying debacle.

Thanks, Partron22. Interestingly, this is 2009 iMac and I have been using Time Machine since I bought it back then. This is the first time I have an issue with it refusing to backup.
I will wait a few days to see if someone else has a fix for TM. If not, I will go the route you suggested with SuperDuper. Thanks so much!