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Cirrus

Updates to Cirrus (iCloud), Revisionist (versions), Spundle (sparse bundles) and T2M2 (Time Machine)

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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.

June 27, 2025 Macs, Technology, Updates

Pinning iCloud Drive in Sequoia is bizarre, and an update to Cirrus

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Pinning files and folders in iCloud Drive behaves differently, and can readily become frustrating. Behaviours explained, with an update to Cirrus to housekeep pinned files.

October 2, 2024 Macs, Technology, Updates

When do you need to read the log?

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.

April 24, 2024 Macs, Technology

iCloud Drive in Sonoma: Optimise Mac Storage or not?

It lets you evict files so their data is only held in iCloud Drive, freeing up local space. But would to get into storage debt as a results?

March 11, 2024 Macs, Technology

iCloud Drive in Sonoma: Clones, sparse files, versions and more

How local files retain their extended attributes and versions when moved to iCloud Drive, but they’re not available to other Macs. Sparse files and storage economy as well.

March 7, 2024 Macs, Technology

iCloud Drive in Sonoma: Mechanisms, throttling and system limits

Further insights into how iCloud Drive works using a folder of 20 small files. These reveal system limits including chunk size and throttling.

March 5, 2024 Macs, Technology

Mints and Cirrus updated for Sonoma’s iCloud Drive logs

When run on Sonoma, these now show log entries from com.apple.FileProvider rather than CloudDocs – a real revelation.

March 2, 2024 Macs, Technology, Updates

iCloud Drive in Sonoma: Copying a file

How Sonoma’s new FileProvider mechanism is reflected in log entries for the upload of a test file to iCloud Drive.

February 29, 2024 Macs, Technology

iCloud Drive in Sonoma: FileProvider and eviction

iCloud Drive in Sonoma has changed beyond all recognition, and is now closely integrated with the FileProvider API. This has important effects, including how you can diagnose problems with the log.

November 21, 2023 Macs, Technology

How macOS Sonoma has changed iCloud even more

How iCloud Drive, concerned with sharing files, and CloudKit, supporting databases shared in iCloud, have changed in Sonoma.

October 30, 2023 Macs, Technology

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