When I started my Mac up, its external backup storage was present as expected, but couldn’t be opened. It turned out that Time Machine had stopped backing up after 12:35 the previous day, but hadn’t reported the problem.
T2M2
T2M2 is nearly 9 years old. Here’s a walk through its summary reports on Time Machine backups. and an outline of what you’ll see in its log extracts.
Updates to Cirrus (iCloud), Revisionist (versions), Spundle (sparse bundles) and T2M2 (Time Machine)
Four updates to popular tools, aimed mainly at compatibility with Tahoe, covering iCloud Drive tests, tools for document versions, creating sparse bundles, and checking your Time Machine backups are working properly.
From dispatch of a new automatic backup, through computing which items need to be backed up, cleaning up snapshots and old backups, to success at the end.
How large should the drive be to store all your backups for the next couple of years? Here’s how to work that out for Time Machine and other apps.
Reading the log in macOS isn’t easy, but here ten systems where it’s the only way to discover and address problems, and a bonus 11th.
You can disable its checks of scheduling, and it better analyses Speed in Big Sur, and backups in macOS 11-14.
Analysis of T2M2’s report from rotating Time Machine backups, including the first full backup made to a NAS.
How to read T2M2’s report on your Time Machine backups, interpret the results, and discover where any problems are occurring.
T2M2 is nearly 7 years old, and has already found at least two bugs in Time Machine. Here’s why it’s so hard to get it to work perfectly with each version of macOS.
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