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macOS 12

Disk Utility can only check backup disks in Recovery

T T Read More

In macOS 12.4, it’s impossible to run First Aid on any container or APFS volume on a disk with a Time Machine APFS backup volume, except in Recovery.

May 19, 2022 Macs, Technology

How much free space does an APFS disk need?

It depends whether you’re going to boot macOS from it, on the space required for snapshots, and how large they could become. And there’s more.

May 18, 2022 Macs, Technology

How hard disks get slower as they fill up

File data stored towards the periphery of the disk is read and written nearly twice as fast as that near the centre. How to take advantage of this.

May 17, 2022 Macs, Technology

What has changed in Monterey 12.4?

The update to bring Monterey to version 12.4 is substantial, and brings many changes across macOS. Apple’s release […]

May 16, 2022 Macs, Technology

Monterey 12.4 update, Big Sur 11.6.6 and Catalina SU 2022-004 are now available

Apple has just released the update to macOS Monterey, bringing it to version 12.4. Release notes state that […]

May 16, 2022 Macs, Technology, Updates

Should you continue using HFS+?

Which is faster with a hard disk: using APFS or sticking with HFS+? Are there any differences in their performance on SSDs?

May 16, 2022 Macs, Technology

Last Week on My Mac: The slim hope of recovery

Monterey changes the way that Recovery works on M1 Macs, making them more like Intel Macs by using a paired Recovery volume. But that could spell trouble.

May 15, 2022 Macs, Technology

Which SSDs can you boot your M1 Mac from? Do hard disks work too?

Which of the external disks tested can be used to boot from? Do they work reliably with Secure Boot? Could you boot from an external hard disk?

April 29, 2022 Macs, Technology

Inside the new macOS update log

The restore.log file on the Update volume contains details of all macOS updates installed since 11.0.1. Here’s a quick guide to its contents and use.

April 26, 2022 Macs, Technology

How macOS manages M1 CPU cores

T T Read More

From the 8 cores of the original M1 chip to the M1 Ultra’s 20, this is how macOS manages threads from apps, services and other code.

April 25, 2022 Macs, Technology

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