After all, if you're upgrading to macOS Catalina, you want your Mac to boot to it all the time, don't you? Not necessarily. Now, the big question is why you don't want to install macOS Catalina on your main hard drive. The good news is that external SSD is much cheaper than before and the price gap is much smaller. For permance consideration, external SSD is much better becaus of faster reading and writing speed. And this priciple also applies to macOS Catalina. MacOS can be installed on an external storage device by default, such as HDD, SSD or USB flash drive. Why Installing macOS Catalina on External SSD? This article shows you how to set up a new SSD with macOS Catalina that you can boot from. However, since Apple initiated a relatively new partition scheme (APFS) with macOS High Sierra, the process is slightly different than with older versions of macOS. By Petty Madison | Last Updated: Dec.28, 2020Ĭan you install macOS Catalina on an external SSD connected to your Mac? Yes, it's definitely possible.
