I started the upgrade process, and sometime around the "installing" step, Unity froze. The hard drive light is on, so I don't want to reboot it, but I also can't do anything at the moment. Is this normal? What should I do?
Update: It's been over an hour now. I'm going to download the ISO on another machine, and if it's still frozen when that finishes, I'll sudo reboot
it and install the new version from a flash drive. Unless someone knows a better solution...