Back Up Your Startup Disk Using Disk Utility
In this guide, we detail one of many methods for backing up a startup disk. The process will take up to two hours or so, depending on the amount of data you need to back up. How to Back up Your Startup Disk Using Disk Utility We will use macOS’ Disk Utility to perform the backup. It has two features that make for a simple procedure: First, it can produce a bootable backup, which you can use as a startup disk in an emergency....