Make sure the Install OS X El Capitan.app file is in your Applications folder.
cd "C:\Program Files\Oracle\VirtualBox\" VBoxManage modifyvm "Your VM Name" --cpuidset 00000001 000106e5 00100800 00010b65 78bfbf7f VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/efi/0/Config/DmiSystemProduct" "MacBookPro11,3" VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/efi/0/Config/DmiSystemVersion" "1.0" VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/efi/0/Config/DmiBoardProduct" "Mac-2BD1B31983FE1663" VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/smc/0/Config/DeviceKey" "ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc" VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/smc/0/Config/GetKeyFromRealSMC" 1 Use code with caution. Troubleshooting Common Errors
Mac OS X El Capitan 10.11.1 Image ISO: Comprehensive Guide to Making It Work macosxelcapitan10111imageiso work
Head to the official Apple Support Downloads page or use their direct link to download OS X El Capitan. The download will arrive as InstallMacOSX.dmg .
Alternatively, you can convert the downloaded .dmg file to an ISO with a simpler two-step process: Make sure the Install OS X El Capitan
: Ensure at least 8GB-16GB of free space is available. How to download and install macOS - Apple Support
hdiutil create -o /tmp/ElCapitan -size 8g -layout SPUD -fs JHFS+ The download will arrive as InstallMacOSX
Set the virtual motherboard chipset to ICH9 and enable EFI in your VM settings.
(This sets the device clock to February 1, 2016, a window when the certificate was fully valid). 2. Virtual Machine Stuck in a Boot Loop or Guru Meditation
Before running any commands, you must obtain the genuine El Capitan installer from Apple.
: Modified installers can include keyloggers or rootkits.