VBoxManage modifyvm "Yosemite" --cpuidset 00000001 000306a9 04100800 7fbae3ff bfebfbff
VBoxManage setextradata "Yosemite" "VBoxInternal/Devices/efi/0/Config/DmiSystemProduct" "MacBookPro11,3"
VBoxManage setextradata "Yosemite" "VBoxInternal/Devices/efi/0/Config/DmiSystemVersion" "1.0"
VBoxManage setextradata "Yosemite" "VBoxInternal/Devices/efi/0/Config/DmiBoardProduct" "IHateApple"
VBoxManage setextradata "Yosemite" "VBoxInternal/Devices/smc/0/Config/DeviceKey" "ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc"
VBoxManage setextradata "Yosemite" "VBoxInternal/Devices/smc/0/Config/GetKeyFromRealSMC" 1


VBoxManage setextradata "Maveriks" "CustomVideoMode1" "1280x1024x32"

VBoxManage modifyhd MonDisque.vdi --resize 20000

vboxmanage modifyhd "D:\Virtual Machines\Maveriks\Maveriks.vdi" --resize 30000