This is an old revision of the document!
https://www.howtogeek.com/289594/how-to-install-macos-sierra-in-virtualbox-on-windows-10/
Install dmidecode
for MacOS from http://cavaliercoder.com/blog/dmidecode-for-apple-osx.html by running:
brew install cavaliercoder/dmidecode/dmidecode
Then run dmidecode 3.0
to get a full listing, from which we can copy values to apply to VirtualBox's DMI info.