Also, performance will never be quite as fast as Apple’s soldered internal SSD, but with a modern Thunderbolt 4 drive, you likely won't notice the difference. Installing macOS on an external drive turns a $20 enclosure into a multi-booting powerhouse. Whether you are a developer testing the next beta or a video editor needing a scratch disk OS, this is the safest way to push your Mac to its limits.
Let’s be honest: your Mac’s internal SSD is precious real estate. Between Xcode logs, Final Cut Pro libraries, and that "System Data" black hole, space disappears fast. install mac os on external drive
But what if I told you that you don’t have to delete everything to try the latest macOS beta? Or that you could carry your entire operating system in your backpack? Also, performance will never be quite as fast