

To install macOS on an SSD using Internet Recovery: You can use the macOS installation tool to install macOS on a new SSD that you have installed in your computer. You must be able to connect to the internet in order to use these tools. In this mode, you can repair your internal disks, restore files from a Time Machine backup, get online help, or reinstall macOS. This allows you to boot your Mac into recovery mode.

On any Mac made after 2009, there is a built-in recovery system. How to Install macOS on a New SSD Using macOS Recovery

If you’re ready to make the upgrade, then here’s how to install macOS on a new SSD. There are several ways to do so, and we’ll take a look at some of them below. You’ll need to install macOS onto it to get your Mac up and running again. An SSD on its own isn’t much use, however. If you use a Mac, it’s possible to install a new SSD.
