Tried running Media Creation Tool (22h2) from the Desktop. It checked things, downloaded updates ... and then sat on "Making sure you're ready to install" for 8 hours with the spinning wheel symbol spinning away and the disk access light flicking on every couple of seconds. Then I stopped the install and tried restarting the install with the internet disconnected but that failed right away saying it couldn't download updates. So now I'm trying to install Win 10 from the USB after selecting the don't install updates option.