[Solved] Time Machine Backups Failing on Mojave

kramden88

macrumors member
Original poster
Jul 14, 2008
43
0
NJ, USA
I installed Mojave the other day on my iMac. Time Machine worked for a couple days but now keeps failing. The error states, "Time Machine could not create a local snapshot to back up from because there was insufficient free space on the source volume(s)." The source volume has 88 GB free. I ran First Aid on the Macintosh HD and it didn't resolve it. Running First Aid on the Time Machine drive, which took around six hours, did finally resolve the issue.
 

Baldlars

macrumors newbie
Oct 5, 2018
3
3
Glad to hear this ... didn't work for me. But my solution worked, but at a price. I erased my hard drive (losing all my previous backups) and formatted the drive as MacOS Extended (Case Sensitive, Journaled). This has worked for me.
 
  • Like
Reactions: seecoolguy

kramden88

macrumors member
Original poster
Jul 14, 2008
43
0
NJ, USA
Glad to hear this ... didn't work for me. But my solution worked, but at a price. I erased my hard drive (losing all my previous backups) and formatted the drive as MacOS Extended (Case Sensitive, Journaled). This has worked for me.
Interesting, I might have to do the same because it works most of the time but fails sporadically.
 

seecoolguy

macrumors regular
Nov 28, 2007
243
21
Glad to hear this ... didn't work for me. But my solution worked, but at a price. I erased my hard drive (losing all my previous backups) and formatted the drive as MacOS Extended (Case Sensitive, Journaled). This has worked for me.
backups still fail for me :(
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.