You have probably noticed that Techtool Pro reminds you to back up your computer each time you launch it. (Unless of course, you’ve clicked the “Do not show this message again” checkbox.) In addition to being a good idea to back up in normal circumstances, it is an especially good idea if it could be a while before you have easy access to an Apple or Apple-authorized repair facility. While Techtool Pro’s volume and partition repairs are great for logical problems, physical damage cannot be repaired in software.
When it comes to your backups, go with redundancy. If at all possible, try to have more than one backup available. Time Machine, built into macOS, is a great option. To add redundancy, consider the Techtool Pro cloning tool to make an exact copy of your startup disk to another drive or disk image that you can save in the cloud. It might even be a good idea to have an unused external solid state drive to use as a startup disk in a pinch.
If you are unsure of which drives to use for each of these tasks, see below to see our current recommendations.
Pro Tip: If you have existing back up drives, be sure to test them with the Surface Scan and Volume Structures tests to make sure that they are still suited to back up your important data.