Help with downloading OS Big Sur
I have an Early 2015 Macbook Air 11 inch, and am trying to download and upgrade to Big Sur OS from a pretty old one - El Capitan. However, after downloading for about an hour, it seems to stop almost at the end, and the message reads "Calculating" on the App Store. Nothing happens after this, and it does not finish downloading. I tried to download it 3 times, and am on the 4th try. Any idea about the problem and suggestions about how to address?