If you want to install a beta version of macOS, either for software development or for simply poking around, the smartest way to do it is to partition your Mac’s hard drive. That will create a new storage area just for the different installation, with entirely separate data, so none of your precious documents are at risk.
You also might want to have different versions of macOS on hand for testing old versions of the operating system, too. It’s easier than keeping a pile of aging Macs around (my go-to strategy).
Luckily, the Mac comes with a very handy tool to partition your hard drive for free. Read on to find out how to partition your Mac’s hard drive with Disk Utility.
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