I Recently bought paralles 17 and this expanding disk problem its unbelievable, i've being reading forum threads from people from 2016 complaining about this same problems, you guys haven't figured it out how to fix it? if this ''Parallels not enough disk space'' I will ask for a Refund Immediately. It's unreasable that yesterday I was with almost 40 gb and today i'm with 5gb. I've been to all the threads and try everything and NOTHING WORKS. Tones of people having the same problem, PLEASE IS THERE A REAL SOLUTION FOR THAT?