Step 3: Before starting Multibeast, you have to go the 'Security' section of System Preferences in Mac OS X, go to the 'General' section, and check 'Anywhere' in the 'Allow applications' section. Once that's done, run Multibeast and install the following options. Run MacOS Catalina (10.15.13) Guest on VirtualBox. Install MacOS Catalina 10.15.3 with one command: $ make catalina. This project will help you install MacOS Catalina 10.15.3 as a guest on VirtualBox (currently only tested on MacOS). The process will partially-automate the MacOS Catalina 10.15.3 Install and requires some user interaction. Catalina-guest-install.log (5.8 KB) - added by Kalak 18 months ago. Install.log from a guest additions install on macOS 10.15 Catalina macOS-10-07-17-24-21.log (286.6 KB) - added by Kalak 18 months ago. Machine log from macOS host.
I cloned a Mojave VirtualBox image and performed a certain OS upgrade on that guest. The upgrade succeeded and the system boots and runs, except for one problem which suggests an issue with the VirtualBox USB pointing devices when used with some newer macOS kernels. Mouse drags do not work. (Simple clicks and double-clicks do work, however.) Click-dragging in the title bar of a window moves the window about 5 pixels only. Scrollbars cannot be dragged. Tests indicate that a mouse button release event is being generated as soon as the mouse is moved even though the button is, in fact, still pressed. I have tried using both the 'USB Tablet' and the 'USB Multi-Touch Tablet' as the pointing device -- both devices behave the same. The host mini does not have a USB tablet, however. It uses an Apple USB keyboard and an Apple USB mouse (neither use bluetooth).