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.
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.
Single-diagram summary of how a modern Mac starts up in macOS 10.12 or 10.13, from pressing the Power button to running the kernel.
How macOS gets to load a hefty kernel and over 300 extensions so quickly: it cheats with a pre-linked kernelcache. And why you don’t see extensions loading in the log.
The Desktop and Finder illusions are held together by Launch Services, which associates file types with apps. This and more now hinge on the UTI.
When you can’t remove an app which you installed just a few minutes ago, you know there’s something wrong. Here’s the solution, and why this is bad security.
Comments to articles here show that some Mac users have, in the last day or so, received silent […]
How to control whether your 2016 MacBook Pro sounds a startup-chime or start up when you open its case, why you can’t unmute a 2017 iMac, and how High Sierra changes your NVRAM.
Additional info about how you can install and upgrade to High Sierra, its new Content Caching feature, how it changes firmware updates, changes to NVRAM, and more.
How can you tell whether your Mac supports Continuity, whether you bought an app from the App Store, and diagnose extension problems?