You need a backup plan, and it’s prudent to implement one before a major update like macOS Catalina. Here’s how and when to choose between Apple’s Time Machine and third-party options including online backup services.
AppleInsider – Frontpage News
Apple Day – Apple, iPod, iPad, iPhone, iTouch, iMac, iBook
Apple Day – Apple, iPod, iPad, iPhone, iTouch, iMac, iBook