How To Update Macos High Sierra 10.13.6 To 10.15 Jun 2026

While the upgrade process is usually smooth, you might encounter some problems. Here are a few common ones and how to resolve them:

To check your model, click the in the top-left corner of your screen and select About This Mac . Compare 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 Step 2: Check Your Storage and Power

If your Mac is older than the models listed above, you cannot install Catalina. Your final supported version is High Sierra or Mojave (10.14). how to update macos high sierra 10.13.6 to 10.15

This method erases the hard drive, providing a fresh system free of legacy errors. It requires a USB flash drive (16GB minimum).

To stay secure and benefit from performance improvements, go to > Software Update and ensure "Automatically keep my Mac up to date" is checked. This will install future Catalina security updates (up to 10.15.7) without you having to think about them. While the upgrade process is usually smooth, you

Select your main hard drive (usually Macintosh HD) and click . Step 3: The Installation Process

Upgrading your Mac from is a direct upgrade path that revitalizes an older machine with updated application support, modern security protocols, and dedicated apps like Apple Music and Podcasts. Your final supported version is High Sierra or Mojave (10

Your Mac needs at least 4GB of memory and roughly 12.5GB to 18.5GB of available storage space to run the installation smoothly. Step 2: Check for 32-Bit App Compatibility

The computer may restart several times, and the fan might run loudly. This is completely normal.

Before initiating the upgrade, the user must verify that their hardware supports macOS Catalina. The following models are compatible with 10.15 but are generally compatible with High Sierra:

softwareupdate --list-full-installers softwareupdate --fetch-full-installer --full-installer-version 10.15.7