VBoxManage modifyvm MacOS — cpuidset 00000001 000106e5 00100800 0098e3fd bfebfbff
VBoxManage setextradata MacOS “VBoxInternal/Devices/efi/0/Config/DmiSystemProduct” “iMac11,3”
VBoxManage setextradata MacOS “VBoxInternal/Devices/efi/0/Config/DmiSystemVersion” “1.0”
VBoxManage setextradata MacOS “VBoxInternal/Devices/efi/0/Config/DmiBoardProduct” “Iloveapple”
VBoxManage setextradata MacOS “VBoxInternal/Devices/smc/0/Config/DeviceKey” “ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc”
VBoxManage setextradata MacOS “VBoxInternal/Devices/smc/0/Config/GetKeyFromRealSMC” 1
VBoxManage setextradata MacOS VBoxInternal2/EfiGopMode 4

these are the correct forms but replace those stupid printers quotes. There are NO quotes around MacOS.