I would like to upgrade to Big Sur on a test system (MacBook Pro (16 inch, 2019)) that already has macOS Catalina 10.15.6 installed.
Since this is to work in a company network, additional software has already been installed:
- Zscaler Security
- Intelligent hub
- McAfee Endpoint Security for Mac
I quit these programs to avoid problems.
In order not to have to do this process again, I would like to perform an in-place upgrade.
sudo / Applications / Install \ macOS \ Big \ Sur.app/Contents/Resources/startosinstall --agreetolicense --forcequitapps --nointeraction
With 31% the installation aborts with a meaningless error message. What can I do? Are there logs? Or is wiping and reinstalling faster?