The laptop I'm writing this on came with Windows 8. I thought I'd update it to Win 8.1. I use Linux so I did not want Win 10. During the "download" the progress bars did not move from 0% so I thought that it was not working and hit "Cancel". Later on I tried it again but looked at the task manager, in fact it was downloading but Windows is so stupid it could not even display a vaguely accurate progress bar. Yes, I can dual boot into Windows or Linux.