* [email protected]: > i would like these 10.11 and 10.13 as vm guest under 10.15.
Why as a VM guest? Have you considered installing and booting different macOS versions on separate partitions of the same machine? You can even install macOS on external harddisks. Another option I find interesting is macOS-Simple-KVM [1], if you happen to have a spare Linux box sitting around. [1] https://github.com/foxlet/macOS-Simple-KVM Not exactly what you asked for, but I still hope this helps a bit. -Ralph
