I would like to install a VirtualBox guest of macOS High Sierra on my MacBook Pro that is also running macOS High Sierra so that I can experiment with MDMs, etc. without rendering my primary laptop unusable. I've created an ISO of High Sierra by downloading the installer from the Mac AppStore and running the following commands:
hdiutil create -o /tmp/HighSierra.cdr -size 7316m -layout SPUD -fs HFS+J hdiutil attach /tmp/HighSierra.cdr.dmg -noverify -nobrowse -mountpoint /Volumes/install_build asr restore -source /Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -erase hdiutil detach /Volumes/OS\ X\ Base\ System hdiutil convert /tmp/HighSierra.cdr.dmg -format UDTO -o /tmp/HighSierra.iso mv /tmp/HighSierra.iso.cdr ~/Desktop/HighSierra.iso
I've also created my VirtualBox guest on VirtualBox 5.2.0 r118431 with 8GB RAM and 2 processors. However, when I attempt to boot from the ISO to start the install process, I'm met with a blank, black screen.
Is there something else I need to do in order to create my virtual macOS instance?