Trouble downloading (and then installing) macOS Catalina from Mojave.

I tried again, my computer is hard-wired to the router. This time it got to 4.?? GB downloaded before giving me the same error message. I was not using any other devices or doing anything else, just watching it download. Any other tips? And when I try again, it always starts from the beginning again....very frustrating.

Safe mode seems to have done the trick. It took maybe 15-20 minutes to enter safe mode, but then I was able to start the download and it completed. It’s now in the process of installing, hoping that will go smoothly. Now downloading Catalina on my 2012 MacBook Pro. Had to find a link online to get it, but it seems to be working.

thanks for the tip!!

So I managed to download the Catalina MacOS, and installation started, but it won’t complete....I’ve tried everything I could find online to remedy this including reset of NVRAM twice. That did get it to complete the progress bar under the Apple logo, but then it stops again. I’m now at a loss....thank God my MacBook Pro updated no problem! Or at least I hope it’s no problem, it shows “relocated files” on the home screen which keep getting accessed when I try to do certain things....not sure what’s up about that yet. But at least I can get emails and surf online. Right now I’m using my iPadPro to write this. Any more ideas on what to do with my Mac mini?

After reading my comments below, should I try safe mode again? This time it’s mid-installation, so not sure how that would work. But I’m getting desperate.....