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macOS 27

Last Week on My Mac: Is AI worth 30 GB?

Golden Gate’s AI features go far beyond Visual Look Up and others. But do they use up too much disk space, and could there be a single switch to turn them all off?

September 20, 2026 Macs, Technology

macOS Tahoe 26.4 changed boot volume structure

It turns out that macOS Tahoe 26.4 added a new folder and firmlinked it from the Data to System volumes, and it’s now seeing light use in Golden Gate.

September 19, 2026 Macs, Technology

Spotlight indexing bug fixed in Golden Gate

Since macOS Mojave, certain plain text files can never be found by local Spotlight search, because their contents weren’t indexed. This has now been fixed in macOS 27.0. Hurrah!

September 17, 2026 Macs, Technology

What has happened with XProtect

Changes to XProtect and XProtect Remediator in macOS 27 can appear puzzling. And why does it still get MRT from 2022? Plus details of firmware and Recovery systems.

September 16, 2026 Macs, Technology, Updates

Finding your feet in Golden Gate

T T Read More

How to deal with problems upgrading, a guide to Recovery in case, new Liquid Glass control and an Easter Egg, rounding of rectangle corners, and AI and language support.

September 15, 2026 Macs, Technology

Apple has released macOS Golden Gate, and security updates to Tahoe 26.7, Sequoia 15.8

Apple has now released the first public version of macOS 27.0 Golden Gate, together with security updates taking […]

September 14, 2026 Macs, Technology, Updates

How can you copy or restore keychains?

Login keychain behaviour changed in Tahoe 26.4, and now ties access to one Mac. That could cause problems, as the most reliable transfer is by two-Mac migration.

September 14, 2026 Macs, Technology

Last Week on My Mac: Still a surprise

T T Read More

If it’s not the date or features of a new version of macOS that come as a surprise, then what is? It’s what birders refer to as jizz, or its feel. What should we look for in Golden Gate?

September 13, 2026 Macs, Technology

Which of my apps for macOS Golden Gate?

List of 37 of my free apps that should be compatible with macOS Golden Gate, and will be supported for it, plus 5 command tools.

September 12, 2026 Macs, Technology, Updates

Keychain copying, migration and upgrading VMs

In Tahoe and later, using Macs with Secure Enclaves, copying the login keychain between them won’t work. But migration should be successful, and can also be used to create new VMs, such as Golden Gate.

September 11, 2026 Macs, Technology

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