How to migrate files to a new MacĪpple includes a useful tool as part of macOS: Migration Assistant. Here’s how to migrate your files to your new Mac, or do a clean installation, and the pros and cons of both methods. When you get a new Mac, it might be a good idea to do a clean installation starting from scratch with a brand-new operating system, and copy the files that you need from your old Mac manually. But when you set up a new Mac, should you migrate your old files or do a clean installation? If you’ve just bought a new Mac, and you’re upgrading from an older computer, you want all of your files and data to be accessible on the new machine. Apple + How To Setting Up a New Mac: Should You Migrate or Do a Clean Installation?