How to make a bootable macOS Sierra installer driveHow do you test macOS Sierra without installing it directly on your Mac? You create a bootable drive instead!
Installing an operating system from a bootable drive makes it easier to do a clean install with a fresh copy of the operating system. It's also useful for when you are installing on multiple Macs and don't want to have to download it each time.
Apple's 2016 software updates — iOS 10, watchOS 3, tvOS 10, and macOS Sierra — are currently available as closed developer previews and as public betas for iPhone, iPad, and Mac. While the betas contain new features, they also contain pre-release bugs that can prevent the normal use of your iPhone, iPad, Apple Watch, Apple TV, or Mac, and are not intended for everyday use on a primary device. That's why we strongly recommend staying away from the developer previews, and using the public betas with caution. If you depend on your devices, wait for the final release this fall.
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How to format your externa...
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How to make a bootable macOS Sierra installer drive
