Downloaded Catalina on my new 2018 Mac mini. Started the install, it went to and stayed on a black screen with white Apple logo and progress bar. The bar expanded until it was full all the way across. The mini sat at this screen for about 2.5 hours. I was wondering why it was taking a long time so I touched the mini and quickly pulled my hand away! It was scorching hot! I decided to pull the plug and let it cool down. Now that the mini has cooled off, it won’t turn on! What do I do? I tried contacting developer support, but they’re probably all at WWDC. *sigh* Thankfully this isn’t my only Mac. I don’t know what I would have done if it was.
Got my mini back two days ago. They apparently replaced the PSU to no avail, then replaced the logic board. This work was done all at the local Apple Store. Hopefully this info is getting back to the right people at Apple HQ so that they can do something about it. I'm definitely not installing Catalina for a while, lol.