Update from Yosemite to Big Sur?
My daughter has a MacBook Air (13 inch, early 2015) with 1.6 GHz Intel Core 5, 4GB ram and running OS X Yosemite v. 10.10.5. She has never updated the OS and can now no longer run some important software she uses. Is it possible to update the OS and to which one? Is Big Sur too big a leap??
MacBook Air