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Apple silicon

Create a bootable external disk for Apple silicon Macs in Tahoe

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Apple silicon Macs were designed to boot almost as securely from external disks as from their internal SSD. That makes macOS installation a little more complicated. Here’s how to do that.

December 9, 2025 Macs, Technology

Erase All Content and Settings does what it says

It throws away the encryption key for the Data volume, effectively wiping all its data. It doesn’t alter the System volume, SSV, or the macOS installed.

November 12, 2025 Macs, Technology

Last Week on My Mac: What do those CPU frequencies mean?

Given what we know about the base M5, is it really a significant improvement on the base M4. What features should we be looking at?

November 2, 2025 Macs, Technology

Updated CPU core frequencies for all current Apple silicon Macs

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How operating frequencies of CPU cores used by the latest base M5 chip compare with those from previous families in the M series, and what that means. Complete with updated tables for all current chips.

October 30, 2025 Macs, Technology

Updating CPU frequencies for Apple silicon Macs

A call for help: can you help complete this table of all the CPU core frequencies of M-series chips? M3 Ultra and M5 values are requested, please.

October 28, 2025 Macs, Technology

Gain access to a locked Mac with Recovery Assistant

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You’ve tried entering your password, but it doesn’t work. Should you try guessing? As that imposes increasing waiting times of up to 8 hours, maybe not. Try this instead.

October 22, 2025 Macs, Technology

Explainer: FileVault

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The T2 chip was designed for FileVault, and it comes at no cost to that and in Apple silicon Macs. Here’s how it works, and why everyone should enable it.

October 18, 2025 Macs, Technology

How to migrate macOS virtual machines

If your virtualiser allows you to run 2 macOS VMs at the same time, and to give them different MAC addresses, it’s easy to migrate from one to the other as explained here.

October 10, 2025 Macs, Technology

Which firmware should your Mac be using? (version 10, Tahoe)

Listing for all compatible Intel Macs with T2 chips, and all Apple silicon Macs.

September 22, 2025 Macs, Technology

Which cores does Visual Look Up use?

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Which type of CPU cores are most active during Visual Look Up? How their frequencies and active residencies change? How demanding is it?

September 16, 2025 Macs, Technology

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