Suburban robots that monitor reality
Yeah, Secure Boot can be disabled - Don't Panic, You Can Boot Linux on Apple's New Devices - OMG! Ubuntu!Maybe it offers up the appropriate Apple signed certs for boot?
I read that one can disable T2 secure boot by booting to recovery mode and selecting the Startup Security Utility from the Utilities menu, which is an option of sorts I guess. Am waiting to see someone confirm that Virtualbox can still play (ie run a Linux guest under Mac OS un the most recent hardware).
I can't see how the secure boot would affect a guest OS in VirtualBox, that guest isn't touching the hardware boot process, the boot is handled by the virtualisation processes.