That’s because Apple periodically drops support for older Macs that can’t run later OS X releases effectively. You’re more likely to run into problems when you try to run a new version on an older Mac. In general, if you want to run an older version of macOS, it should work. To install an older version of OS X on a Mac, you need to: In situations like these, installing an old version of the operating system may be your best choice. Or you might have old software that can’t be run on run on newer macOS versions like Big Sur and Monterey. Older Macs often run better with earlier versions of macOS, for example.
And eventually, Apple stops supporting older editions of macOS - and that means no more security patches.īut there are some good reasons to do it anyway. After all, newer versions of the operating system have more features.
On the face of it, running old versions of macOS on your Mac seems counterproductive.
