Patch El Capitan vbox configuration file with iMac11,3 DMI Settings and Spoofing a Lynnfield i5 750 CPU

1.  From the start menu, type cmd and click run as administrator to open an administrative command prompt.

  VB14 Open cmd prompt as administrator.png   25.94KB   54 downloads

2.  Type the following lines, followed by <enter>  after each line...

cd "C:\Program Files\Oracle\VirtualBox\"VBoxManage.exe modifyvm "El_Capitan" --cpuidset 00000001 000106e5 00100800 0098e3fd bfebfbffVBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/efi/0/Config/DmiSystemProduct" "iMac11,3"VBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/efi/0/Config/DmiSystemVersion" "1.0"VBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/efi/0/Config/DmiBoardProduct" "Mac-F2238BAE"VBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/smc/0/Config/DeviceKey" "ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc"VBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/smc/0/Config/GetKeyFromRealSMC" 1

An alternative model to spoof is MacBookPro11,3 with an IvyBridge i7-3770 CPU - substitute the second to fifth lines above with

VBoxManage.exe modifyvm "El_Capitan" --cpuidset 00000001 000306a9 04100800 7fbae3ff bfebfbffVBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/efi/0/Config/DmiSystemProduct" "MacBookPro11,3"VBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/efi/0/Config/DmiSystemVersion" "1.0"VBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/efi/0/Config/DmiBoardProduct" "Mac-2BD1B31983FE1663"

3.  Close the command prompt window.

Installation of El Capitan

We are now ready to start the El_Capitan Virtual Machine....

  VB15 Start VM.png   106.05KB   91 downloads

  VB16 Verbose Boot.png   108.61KB   91 downloads

  VB17 Apple logo.png   64.91KB   60 downloads

Installation should be relatively straight forward, just following the prompts of the OS X installer:

1.  Select language, agree to legal terms

  VB18 Installer GUI Select Language.png   256.46KB   33 downloads

2.  Use Disk Utility from the Utilities Menu to erase and format the virtual hard drive as a single partition GUID Mac OS X Extended.  I named my drive "Macintosh HD" but you can enter whatever you like eg El_Capitan.

  VB19 Disk Utility Erase HD.png   288.85KB   35 downloads

3.  Quit DU and choose Macintosh HD to install El Capitan on.

4.  After 20-30 min (depending on how fast your system is), the installation will complete.  At this point, unmount the El Capitan ISO by clicking the Devices menu from the VM window, click Optical Drives, then choose Remove disk from virtual drive.  The VM is now ready to reboot into OS X from the virtual hard drive.

5.  At the welcome screen, choose your country and keyboard layout.  You can skip transfer information, location services and logging in with your Apple ID if you wish…

6.  Create a User Account and select your Time Zone.  You can skip sending diagnostics and usage data to Apple….

7.  Finally, you will arrive at the El Capitan Desktop.

  VB22 System Information.png   670.39KB   27 downloads

8.  Network/internet and audio should work OOB but on my system, the sounds were distorted.  Unfortunately, there is no QE/CI and the VM resolution will be fixed without the ability to dynamically resize the VM window (no VirtualBox additions for OS X guests atm). 

Customization with VBoxManage

1.  You can change the default resolution of 1024*768 (after shutting down the VM) with the VBoxManage command from the Windows Administrative Command Prompt:

cd "C:\Program Files\Oracle\VirtualBox\"VBoxManage setextradata "El_Capitan" "VBoxInternal2/EfiGopMode" N (Where N can be one of 0,1,2,3,4,5)

referring to the 640x480, 800x600, 1024x768, 1280x1024, 1440x900, 1920x1200 screen resolution respectively.

2.  Adding serials and other SMBIOS details for the System Information Screen

VBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/efi/0/Config/DmiSystemSerial" "W8#######B6"VBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/efi/0/Config/DmiBoardSerial" "W8#########1A"VBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/efi/0/Config/DmiSystemVendor" "Apple Inc."VBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/efi/0/Config/DmiSystemFamily" "iMac"VBoxManage setextradata "El_Capitan" "VBoxInternal/Devices/efi/0/Config/DmiBIOSVersion" "IM112.0057.03B"