Detailed log excerpts showing normal backups in 10.12 to 10.15, with some of the more common errors encountered.
Time Machine
New series looking at how TM works, what its problems are, what tools to use to diagnose those, and how to fix it.
Recommended for all users, particularly those running TM in Catalina, where it analyses strategies used to determine what to back up.
New version tells you free space available on your backup volumes, as well as checking for errors occurring during backups.
Changes in Time Machine reflect continuing development of this Mac-only feature, backtracking on using FSEvents, and making backups more complete.
Time Machine backups made by Catalina are not compatible with earlier versions of macOS such as Mojave. Here’s how they have changed.
Time Machine has changed in Catalina, but details haven’t been provided. How best to prepare to upgrade, and how to address its problems.
It’s time to replace Occam’s Razor with a more appropriate principle: if you’ve found one bug, don’t stop until you have dug deeper and found the others.
When you find one, bugs will necessarily be multiple. If you think you’ve found one, you can be fairly confident that you’ll find more. Four bugs in macOS for the price of one.
Over the night the clocks went back, a Time Machine backup failed. Was this the result of a time error from that change?
The Eclectic Light Company 