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Did that Mac just restart itself? About kernel panics

What they are, how they’ve changed, how to work out what went wrong, and how to deal with them. No Mac should ever experience a single panic.

November 27, 2019 Macs, Technology

More About This Mac: where to find that UUID, MAC address, etc.

Extensive listing of places to find key information such as your User UUID/GUID, Ethernet MAC, model identifier, and much more.

September 24, 2019 Macs, Technology

Does replacing internal storage cause EFI updating problems?

When you replace the internal disk fitted by Apple, some Macs seem to stop installing EFI firmware updates. Is there anything to be done?

July 1, 2019 Macs, Technology

Diagnosing diagnostics and Apple Hardware Test

What should you do when you try to restart in Diagnostics Mode and can’t? And how to check and restore a Recovery partition.

March 12, 2019 Macs, Technology

Can you upgrade or repair a Mac with a T2 chip?

Apple’s latest Macs have T2 chips and SSDs which are not user-replaceable. Isn’t buying one courting with disaster?

November 23, 2018 Macs, Technology

Before boot.efi: the Mac’s initial self-test routines

What happens in your Mac when you press the Power button? Before it loads the EFI firmware, it goes through self-testing, and initialising key chips.

August 8, 2018 Macs, Technology

Last Week on My Mac: The UUID conspiracy

Should you worry about Apple and all those UUIDs? Some claim that they are being used to track you and what you do on your iPhone and Mac.

May 27, 2018 Macs, Technology

Choosing drives: which type, manufacturer, and capacity?

SSD or hard disk? Western Digital, HGST or Seagate? Multiple smaller capacities, or one big disk?

September 4, 2017 Macs, Technology

Sleep, Wake, and Startup: Hardware and ACPI

Shutdown cause codes, wake reasons, ACPI, and sleep states – diagnosing problems from hardware events.

August 8, 2017 Macs, Technology

A Mac Troubleshooting Summary

A starting point for diagnosing and fixing your Mac problems, with links to key articles here.

April 18, 2017 Macs, Technology

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