How To Update Macos High Sierra 10136 To 1015 Link

Because of the version gap, you cannot simply click "Update" in System Preferences. You need the full installer. Open the App Store on your Mac. Search for "macOS Catalina".

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.

Ensure you have at least 15GB to 20GB of free storage space on your primary drive. how to update macos high sierra 10136 to 1015

If you are still on High Sierra, what is the main reason you've waited this long to update? Knowing if you rely on older 32-bit software (like old Office or Adobe apps) can help me give you more specific advice on the transition. Share public link

Catalina only supports 64-bit apps . Applications like older versions of Microsoft Office, Adobe Photoshop, or legacy tools will stop working. Before upgrading, check which apps need updating. Because of the version gap, you cannot simply

Click "Continue" and agree to the software license agreement.

This error is usually caused by an outdated system date on your Mac or an old installer certificate. Search for "macOS Catalina"

Wait for the backup process to finish completely before moving forward. Step 4: Clean Up Disk Space and Update Current Apps