Like El Capitan before it, Sierra has now vanished from the App Store. It has also been removed from your Purchased list. How can you install it now?
recovery mode
Safe mode, or Recovery? Which type of Recovery? How to engage all those useful modes at startup, and when shutting down.
Transferring a decision-making guide from a quick flowchart into Tinderbox notes.
There are now three different Recovery modes. This explains which to use, and provides a flowchart to help you work out how best to reinstall in them.
Over a month after the release of macOS Sierra 10.12.4, Apple quietly let slip the news that it […]
Know how to enter Recovery mode in Sierra? It might not work now if you’re using a wireless keyboard.
Recovery mode includes four basic tools, and gives you access to much more in Terminal’s command shell.
Coupled with FileVault’s whole disk encryption, this can stop others from accessing your data. But there are disadvantages too.
All the useful key combinations, arranged by function rather than keys.
What to do when your Mac won’t start up, and is acting dead, or at least mortally wounded.
The Eclectic Light Company 