Quick Answer: Can I Install an Older Operating System on My Mac?
Contents the Version of macOS That Came with Your Mac Is the Earliest Version It Can Use. for Example, If Your Mac Came with macOS Big Sur, It Will Not Accept...
The version of macOS that came with your Mac is the earliest version it can use. For example, if your Mac came with macOS Big Sur, it will not accept installation of macOS Catalina or earlier. If a macOS can’t be used on your Mac, the App Store or installer will let you know.
Can you download an older OS on Mac?
Any old macOS you have won’t run anymore, because the security certificates on them expired then. However, any old macOS installer that you can download from Apple now will work. … For some years, Apple kept the old installers for versions such as El Capitan, Sierra and High Sierra in the App Store, but hid them.
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How do I install an older version of macOS?
Here are the steps Apple describes:
- Start up your Mac pressing Shift-Option/Alt-Command-R.
- Once you see the macOS Utilities screen choose the Reinstall macOS option.
- Click Continue and follow the on-screen instructions.
- Select your startup disk and click Install.
- Your Mac will restart once the installation is complete.
Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.
