参考 http://bbs.feng.com/read-htm-tid-9908410.html

关键步骤:

1. cd "C:\Program Files\Oracle\VirtualBox"
2. VBoxManage.exe modifyvm "OSXElCapitan"  --cpuidset 00000001 000306a9 04100800 7fbae3ff bfebfbff
3. VBoxManage setextradata "OSXElCapitan"  "VBoxInternal/Devices/efi/0/Config/DmiSystemProduct" "MacBookPro11,3"
4. VBoxManage setextradata "OSXElCapitan"  "VBoxInternal/Devices/efi/0/Config/DmiSystemVersion" "1.0"
5. VBoxManage setextradata "OSXElCapitan"  "VBoxInternal/Devices/efi/0/Config/DmiBoardProduct" "Iloveapple"
6. VBoxManage setextradata "OSXElCapitan"  "VBoxInternal/Devices/smc/0/Config/DeviceKey" "ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc"
7. VBoxManage setextradata "OSXElCapitan"  "VBoxInternal/Devices/smc/0/Config/GetKeyFromRealSMC" 1