How To Update Macos High Sierra 10136 To 1015 «2K»

Your Mac will restart to begin the installation process. A progress bar and an Apple logo will appear on the screen. The process can take anywhere from 30 minutes to over an hour depending on your hard drive speed. Your screen may go black or restart multiple times; this is completely normal. Do not close the lid or turn off the machine until the login screen appears.

He sat back down. The screen flickered as the firmware updated.

Wait for the backup process to finish completely before moving forward. Step 4: Clean Up Disk Space and Update Current Apps how to update macos high sierra 10136 to 1015

Select your primary hard drive (usually Macintosh HD) as the destination.

Major operating system upgrades alter core system files. Skip preparation, and you risk data loss. 1. Check Your Storage Space Your Mac will restart to begin the installation process

Risks and common issues

Not every Mac that runs High Sierra can run Catalina. Before you proceed, verify your Mac model. Your screen may go black or restart multiple

Preparation (critical)

Wait for the list to load, then look at the column labeled .

Upgrading your Mac from High Sierra to macOS Catalina is a direct process, but it requires verifying hardware compatibility and preparing for the shift to 64-bit software. Step 1: Check Compatibility