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Extensions are moving away from the kernel

Management of kernel extensions has changed significantly in Big Sur and later. This overview for users contrasts kexts with user-level extensions which are replacing them.

July 7, 2021 Macs, Technology

Last Week on My Mac: macOS at 20, APFS at 4

Mac OS X has come a long way in the last 20 years, and APFS has just had its 4th birthday. But has this brought the changes we expected?

March 28, 2021 Macs, Technology

Extensions, Big Sur and M1 Macs

How to use kernel extensions, and their replacement system extensions, on Macs running Big Sur, including M1 Macs.

December 15, 2020 Macs, Technology

How to install a printer in macOS Mojave

A sequence of steps to safely install the optimum printer driver for new and old models in macOS Mojave.

October 22, 2018 Macs, Technology

AirPrint or you’re on your own: macOS printing changes

Want support for an older printer? Apple says that’s your problem, and the printer manufacturers aren’t too interested either. But it can be done…

October 18, 2018 Macs, Technology

Apple stops maintaining its printer compatibility list

Apple can no longer be bothered to maintain its list of supported printers and scanners. You just have to try them out and see whether they work.

October 14, 2018 Macs, Technology

Updated visual summary of the Mac boot process

Adds details of the sequence of screens displayed at each stage, to help diagnose boot problems.

September 17, 2018 Macs, Technology

Preparing to upgrade to Mojave: a checklist

Practical tips for those intending to upgrade early, from checking compatibility, preparing workarounds, to making a copy of the installer.

September 12, 2018 Macs, Technology

Booting the Mac: Will my Mac boot from this disk? A visual guide

You want to boot your Mac from an external drive, but it doesn’t work. A diagram to explain what can go wrong, and how to fix it.

September 1, 2018 Macs, Technology

Booting the Mac: bless, and what makes a volume bootable

The command bless used to be able to control all things to do with booting, but has become steadily less useful with the advent of SIP and others.

August 30, 2018 Macs, Technology

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