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Another High Sierra security flaw: Supplemental Update may downgrade security data files (updated – it should be fixed now)

Since updating this, information has advanced again: please read this article, which explains how this problem should now […]

October 13, 2017 Macs, Technology

What’s your Mac been up to for the last 3 months? Inside macOS’s hidden activity records

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Did you know your Mac may keep a history of its activities going back for over 3 months? Here’s how to access it, and some surprising results.

October 13, 2017 General, Macs, Technology

New insights into process performance: log load analysis

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A function of process activity, frequency of writing to the log, and its verbosity, log load is available for the past 3 months or more.

October 12, 2017 Macs, Technology

The first 2 weeks of High Sierra in 8 screenshots

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Eight screenshots – no words – tell the story of the first fortnight with High Sierra.

October 11, 2017 Macs, Technology

Inside the macOS log: logd and the files that it manages

Most of what we know about log files, their maintenance by logd, the role of diagnosticd, and the differences between Persist and Special log files.

October 10, 2017 Macs, Technology

High Sierra Supplemental Update can’t always update

What does the Supplemental Update do to the High Sierra installer? An exploration using the installer, an external SSD, and a bootable USB memory stick.

October 9, 2017 Macs, Technology

Disk Utility: An ever-changing tool

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Troubled at times, we have used Disk Utility through thick and thin. Now it has changed to support APFS, with some weird behaviour.

October 9, 2017 Macs, Technology

How to speed up Time Machine backups

You may still have plenty of space on your backup volume, but if it has millions of files and hard links from years of backups, it will be very slow. Here’s how to fix that.

October 7, 2017 Macs, Technology

High Sierra “Supplemental Update” now available (updated)

Apple has released a “supplemental update” for macOS High Sierra 10.13 from the App Store. According to the […]

October 5, 2017 Macs, Technology

More Scripting in Swift: Shuffling files and writing a property list

Using Swift 4 for a classic scripting task: copying and restructuring files and folders, here to create a logarchive bundle.

October 5, 2017 Macs, Technology

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