![]() ![]() It's also possible that you want to run a different set of apps and, therefore, need more memory.Instead of installing Catalina on both, you have the flexibility of simply connecting the SSD to one of the Macs when you want to boot from it. Since your SSD is essentially an external drive that is portable, you may want to switch it between one Mac and the other. You may want to have the SSD run macOS Catalina on more than one machine.This way, you can update it as new versions are released, then install it as your main OS when you're happy with the stability of the software. Since there are bound to be bugs in early versions of any new OS, you might want to avoid the hassle of having it as your default OS.You are looking for a way to boost the performance without untouching the internal drive. Your Mac (Mostly Mac Mini or iMac) is built upon on a HDD and it runs slowly.Uninstalling and rolling back to an older version of macOS is time-consuming and a tedious process that is prone to errors, so you may not want the hassles that come with it. You might want to try macOS Catalina without having to uninstall and roll back to Mojave or High Sierra if you change your mind.There are several reasons why you might not want to disturb your current installation, whether it's Catalina or an older version of macOS. 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. ![]()
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