Verify that your Mac model matches or exceeds the following requirements: Early 2015 or newer MacBook Air: Mid 2012 or newer MacBook Pro: Mid 2012 or newer Mac mini: Late 2012 or newer iMac: Late 2012 or newer iMac Pro: 2017 or newer Mac Pro: Late 2013 or newer
If your Mac gets stuck on the Apple logo progress bar for more than two hours, a hard reset may be required. Hold the power button down until the machine turns off. Boot the Mac into by holding down the Shift key while powering it back on to let the setup script finish.
If necessary, run a final Time Machine backup to ensure your new system is backed up. What to Do If Your Mac is Too Old
Although you're already running High Sierra, not all models that run High Sierra are officially compatible with Catalina. Check your model against the list below. how to update macos high sierra 10136 to 1015
To check space: Go to . Back Up Your Data (Time Machine)
Once upon a time, in the land of Silicon Valley, there lived an old but reliable Mac running macOS High Sierra 10.13.6
This guide provides a comprehensive, step-by-step process for updating your Mac safely. Phase 1: Preparation (Do Not Skip) Verify that your Mac model matches or exceeds
How much is currently available on your Mac? Share public link
The best way to download Catalina is through the Mac App Store link on Apple's website.
Click the in the top-left corner of your screen and select About This Mac . Check your model against the official compatibility list below: MacBook: Early 2015 or newer MacBook Air: Mid 2012 or newer MacBook Pro: Mid 2012 or newer Mac mini: Late 2012 or newer iMac: Late 2012 or newer iMac Pro: 2017 or newer Mac Pro: Late 2013 or newer If necessary, run a final Time Machine backup
The install may take 30–90 minutes. Do not close the lid or turn off your Mac.
Because Apple has released newer operating systems, Catalina may not appear in your standard App Store search.