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macOS 15

Boot disk structure in macOS, iOS and iPadOS, and AI cryptexes

There are substantial differences in the structure of the internal disks in macOS, iPadOS and iOS, as shown here. And there are at least 24 cryptexes now used to support AI.

June 20, 2025 Macs, Technology

Spotlight search can be blocked by extended attributes

How a long-deprecated extended attribute can stop files such as images from being found in Spotlight search, and how to fix it.

June 16, 2025 Macs, Technology

What has Apple added in advance of macOS 16?

Pasteboard privacy protection, a Magnifier app, Vehicle Motion Cues, Braille Access, Accessibility Reader, Apple Diagnostics and many others coming to a macOS 16 next month.

May 14, 2025 Macs, Technology

What has changed in macOS Sequoia 15.5?

The update to macOS Sequoia 15.5 is likely to be the last to include remaining enhancements and fixes […]

May 12, 2025 Macs, Technology

Apple has released macOS Sequoia 15.5, and 14.7.6, 13.7.6

Apple has just released the update to macOS Sequoia to bring it to version 15.5, and security updates […]

May 12, 2025 Macs, Technology, Updates

Last Week on My Mac: Checking code can take longer now

Stepping through the stages in security checks made on a notarized Mach-O binary command tool, in Ventura 13.4.1 2 years ago, and now in Sequoia 15.4.1.

May 4, 2025 Macs, Technology

Last Week on My Mac: Gone to launch

Why can apps take many seconds or even minutes to launch on some Macs? More results to puzzle and perplex, and a strategy to address the problem.

April 27, 2025 Macs, Technology

An overview of app extensions and plugins in macOS Sequoia

Detailed listings of which appex and plugin types are managed by System Settings, PlugInKit, and beyond. Even the terms used aren’t consistent.

April 23, 2025 Macs, Technology

Why some apps launch very slowly

Opening Pages can take several seconds, and other apps can hang around for 30 seconds before they’re ready to use. Is it XProtect, online certificate checks, or what?

April 22, 2025 Macs, Technology

Apple has released macOS Sequoia 15.4.1 update

Apple has just released an urgent security update to macOS Sequoia to bring it to version 15.4.1. There […]

April 16, 2025 Macs, Technology, Updates

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