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Big Sur

M1 Secure Boot, morphine and self-destruction

One command in Terminal which instantly disables any support, and why you can’t (yet) boot your M1 Mac in Linux.

May 21, 2021 Macs, Technology

Dealing with a kernel panic during M1 startup

My M1 Mac mini was stuck trying to start up. Its power light was on, but there was no video output, and to all intents it was dead.

May 19, 2021 Macs, Technology

Last Week on My Mac: Changing updating habits

In Big Sur, Apple is trying to change our update habits, getting us all to update early, and run only the latest release of macOS. Its campaign uses installer behaviour, mass psychology, and boot security.

May 16, 2021 Macs, Technology

Explainer: secure boot and boot security

How boot security has changed in the M1 Mac. What it allows you to do, and how it restores flexibility and versatility of external boot disks.

May 15, 2021 Macs, Technology

How to restore Spotlight search of Rich Text files

Big Sur 11.3 fixed a bug which stopped indexing of the contents of RTF files. Here’s how to ensure all your RTFs are now accessible in Spotlight searches.

May 13, 2021 Macs, Technology

Booting an M1 Mac: external disks and local boot policy

How an M1 Mac can start up from an external bootable disk, and how that can fail. All about boot security policy, and how that’s applied.

May 12, 2021 Macs, Technology

How to boot an M1 Mac into an older version of Big Sur

T T Read More

How changing a volume’s boot policy can let you boot in older macOS, and update, if you wish. For anyone who uses external bootable disks with an M1 Mac.

May 11, 2021 Macs, Technology

Time Machine to APFS: When a network backup goes wrong

With a new version of Xcode, I knew that my network backup would take several hours. Then, as it neared its conclusion, disaster struck: the router reset itself and the network share vanished.

May 10, 2021 Macs, Technology

Inside the App Store: how it delivers your apps

Detailed step-by-step account of how apps are downloaded and updated from the App Store. Welcome new internal names like Absinthe, Jetpack, and Crossfire, and Apple’s fraud score.

May 5, 2021 Macs, Technology

Summary of important security fixes in macOS

A lot has changed in recent versions of macOS over the last couple of weeks. This is a […]

May 5, 2021 Macs, Technology, Updates

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