Stop signing in and check the references below.
If you use the command 'exit' you can shift to the EFI menu, but changing the settings doesn't seem to affect the progress of the UEFI Interactive Shell, which stops at the Shell> prompt. select Version: Mac OS X (32-bit) or Version: Mac OS X (64-bit) choose the amount of RAM (default: 2048 MB) choose Create a virtual hard disk now.
Whether it’s for disaster recovery, code testing, or just some fun experimentation, you can use VirtualBox for free to simulate any Windows OS, including 98, 95, or even 3.1. VMs can run any operating system (OS) in your current one. Plus, you can install and set it up in just a few minutes.
After conversion completes, you will see a.Also choose the name for installer disk and the final destination. So I have a MacBook Pro running macOS Sierra (10.12) and I wanted to run a virtual machine (VM) of macOS High Sierra to try out the new operating system. After a long initialization sequence the MAC OS Setup should start. VBoxManage modifyvm 'Mac OS 12' -cpu-profile 'Intel Core i7-6700K'. Click the Add button > Browse to and select the MAC OS 12. Select System > Click the Processor tab > Set Processor (s) to at least 2. In the window, choose the InstallESD.dmg to convert and the disk type to be 'DVD/CD-R master for export'. Running a Mac OS 12 Monterey VM in Virtualbox.