If you’ve already got a new M4 Mac and tried to run a macOS virtual machine on it, then you might have been disappointed. It seems that M4 chips can’t virtualise any version of macOS before 13.4 Ventura. So before you trade in or pass on your M1, M2 or M3 Mac, if you need access to older VMs, you might like to check whether this affects you. I’m indebted to Csaba Fitzl for drawing my attention to this problem, and for reporting it to Apple in Feedback FB15774587. It has also been reported as aff...