To boot an Apple silicon Mac using a bootable USB disk, power on the system or restart it if it's already on, and keep the Power button pressed down. You should now see an option to select a macOS ...

That old collection of macOS installer disk images you used to keep is probably worthless now, and Apple makes it harder to find downloadable copies of anything before macOS Monterey. Yet there ...

To get the correct installer, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise administrators should download from Apple, not a locally hosted ...

Ready to update to MacOS Sierra? Luckily it's pretty straightforward, but there are a couple extra steps you should keep in mind before taking the plunge.

Signing certificates for macOS installers have expired, so Apple consultants and IT admins who maintain troubleshooting toolkits containing older installers will need to download new copies.

If you are getting an error about macOS application installers being damaged, you'll need to redownload them to get a new certificate.

To reiterate, it is possible to download the installer for an older versions the Mac App Store but only if you are running macOS High Sierra or older. If you are running macOS Mojave this will not ...

MacOS High Sierra 10.13.2 improves certain features of Apple’s operating system for laptops and computers, so users are advised to download and install the software update as soon as it becomes ...

Many Mac users are suddenly being prompted to install macOS 10.13 High Sierra. If you don’t want to tie up your Mac for an hour or more — and end up with High Sierra! — read on to learn how to stop ...