Fix macOS El Capitan VirtualBox VM

fix-elcapitan-vbox.sh

#!/bin/sh

usage() {
    cat <<ENDUSAGE
$0: Apply required virtual firmware changes so that El Capitan will run under VirtualBox
Usage: $0 <VM_NAME>
ENDUSAGE
}

if test $# -ne 1 || test "$1" == "-h" || test "$1" == "--help"; then
    usage
    exit 1
fi

vm_name=$1

set -e
set -u
set -x

VBoxManage setextradata "${vm_name}" "VBoxInternal/Devices/efi/0/Config/DmiSystemProduct" "MacBookPro11,3"
VBoxManage setextradata "${vm_name}" "VBoxInternal/Devices/efi/0/Config/DmiSystemVersion" "1.0"
VBoxManage setextradata "${vm_name}" "VBoxInternal/Devices/efi/0/Config/DmiBoardProduct" "Iloveapple"
VBoxManage setextradata "${vm_name}" "VBoxInternal/Devices/smc/0/Config/DeviceKey" "ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc"
VBoxManage setextradata "${vm_name}" "VBoxInternal/Devices/smc/0/Config/GetKeyFromRealSMC" 1

# if you have a Haswell CPU you also need to do this:
#VBoxManage modifyvm "${vm_name}" --cpuidset 00000001 000306a9 04100800 7fbae3ff bfebfbff