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Apple silicon

Firmware updates with macOS 13.4, 12.6.6 and 11.7.7

Some Intel Macs without T2 chips have firmware updates with last week’s security updates. Here are the details.

May 23, 2023 Macs, Technology

When your Mac can’t get to the login window

What to do when your Mac panics during booting, and enters a boot loop, or when it simply fails to get to the login window.

May 17, 2023 Macs, Technology

Identifying the state of your Mac: is it dead or alive?

Is that Mac completely dead due to a severe failure, or could it just be in DFU mode? They aren’t easy to distinguish on most Macs.

May 15, 2023 Macs, Technology

Last Week on My Mac: Systematic troubleshooting

New series aimed at troubleshooting Apple silicon Macs, with additions for recent Intel models. You’re invited to contribute your experience and knowledge please.

May 14, 2023 Macs, Technology

Has Apple sounded the last POST?

Power-on self-test routines are widespread in electronics, and one of the oldest features in personal computers. Do Apple silicon Macs run them?

May 12, 2023 Macs, Technology

How to check whether an SSD gets trimmed

Why should you trim an SSD? How to tell whether an SSD needs trimming, finding out whether it has trim support, and whether it does trim.

April 6, 2023 Macs, Technology

Why you should enable FileVault

T2 and Apple silicon Macs always encrypt the Data volume in internal storage. So why bother with enabling FileVault? And can you do that on external bootable disks?

March 31, 2023 Macs, Technology

Fixing firmware update problems

What should you do if a firmware update goes wrong? Here’s a guide to avoid panic, whether your Mac is Intel, has a T2, or M-series chip, and for Studio Displays.

March 29, 2023 Macs, Technology

Ownership of Apple silicon Macs matters: how it can stop external bootable disks

To boot from an external disk, Apple silicon Macs need them to have an Owner. Here’s how to investigate ownership, and how it works.

March 15, 2023 Macs, Technology

How troubleshooting has changed with macOS security

macOS has changed fundamentally. So has troubleshooting it. Secure Boot, the SSV, and Gatekeeper checks bring changes in strategy.

March 6, 2023 Macs, Technology

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