How To Update Macos High Sierra 10.13.6 To 10.15 -

Also, this is a good time to remove any third-party antivirus software, disk cleaners, or system optimizers you may have installed. These utilities often interfere with the upgrade process and can cause unexpected errors.

Before making any significant system change, a full backup is your safety net. Apple's built-in backup tool, , is the ideal solution.

However, because macOS Catalina introduces radical architectural changes—most notably the complete removal of support for older 32-bit software—you must prepare your Mac carefully before clicking install. how to update macos high sierra 10.13.6 to 10.15

Your Mac will prompt you to enter your administrator password.

Never attempt an operating system upgrade without a fresh backup. If the installation is interrupted by a power failure or a system crash, you risk losing your data. Connect an external hard drive to your Mac. Go to . Click Select Backup Disk and choose your external drive. Also, this is a good time to remove

Click this official Apple Support Link: How to download and install macOS.

: You need at least 18.5 GB of available storage to upgrade from High Sierra. Apple's built-in backup tool, , is the ideal solution

Stuck at version 10.13.6, need 10.15. Not… - Apple Community