However, this shell does not appear to have any commands which can modify this variable. The firmware does allow booting to a built‑in EFI 1.0 shell. I realize the SIP setting is stored in the 4 byte NVRAM variable given below. I can restart to firmware, but the Recovery volume does not have a boot.efi which can be chosen to boot from. The Mac Startup Manager does not appear to exist. The holding down the ⌘+ R key combination at startup does not work. However, booting to internal macOS Recovery does not seem possible. With an actual physical Mac, the usual method would involve first booting to internal macOS Recovery, then entering the command given below in a Terminal window.
I have Big Sur installed in a VMware Fusion Player virtual machine.
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