🧪 Testing: It’s always a good idea to test if a new version of macOS is compatible with all apps you rely on, and you can do just that by installing macOS on an external SSD or HDD.Here are some situations where this approach can be especially useful: When you install macOS on an external hard drive, you can get your hands on the latest and greatest features without the risk of making your computer unusable. At the same time, new versions of macOS always introduce attractive new features, and it’s understandable if you want to try them as soon as possible. It’s not uncommon for users to see their Macs become less stable than a hormonal teenager going through a caffeine crash. Seasoned Apple users know that when a new major version of macOS is released, things do always go smoothly. When It Makes Sense to Install macOS Monterey on an External Hard Drive Is It Possible to Install macOS Monterey on an External SSD?.Install macOS on Your External Hard Drive When It Makes Sense to Install macOS Monterey on an External Hard Drive.

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