How to Run Mac OS X Mountain Lion 10.8.3 on VirtualBox
Mac OS X Mountain Lion is the ninth major release of Apple's desktop operating system, which was launched in 2012. It introduced many features such as Notification Center, Messages, Notes, Reminders, Game Center, AirPlay Mirroring, Gatekeeper, and iCloud integration. If you want to try out this version of Mac OS X on your PC, you can use VirtualBox, a free and open-source virtualization software that allows you to run various operating systems on your host machine.
In this article, we will show you how to install and run Mac OS X Mountain Lion 10.8.3 on VirtualBox using a pre-made image file that works for both AMD and Intel processors. Before we begin, make sure you have the following requirements:
A PC with at least 2 GB of RAM and 20 GB of free disk space.
VirtualBox 4.3 or later installed on your PC.
A Mac OS X Mountain Lion 10.8.3 image file for VirtualBox (you can download it from here).
An unlocker tool that enables Mac OS X support on VirtualBox (you can download it from here).
Once you have everything ready, follow these steps to set up Mac OS X Mountain Lion on VirtualBox:
Extract the downloaded image file and unlocker tool to a folder on your PC.
Run the unlocker tool as administrator and select "Install" to patch VirtualBox.
Open VirtualBox and click on "New" to create a new virtual machine.
Name it "Mac OS X Mountain Lion" and choose "Mac OS X" as the type and "Mac OS X (64-bit)" as the version.
Assign at least 2 GB of RAM and create a new virtual hard disk with at least 20 GB of size and VDI format.
Select the newly created virtual machine and click on "Settings".
Go to "System" and uncheck "Enable EFI".
Go to "Processor" and assign at least 2 CPUs.
Go to "Display" and increase the video memory to 128 MB.
Go to "Storage" and click on the empty CD icon under the IDE controller.
Click on the CD icon next to "Optical Drive" and choose "Choose/Create a Virtual Optical Disk File".
Browse to the folder where you extracted the image file and select "InstallESD.dmg".
Check the box next to "Live CD/DVD" and click "OK".
Start the virtual machine and wait for it to boot from the image file.
When you see the language selection screen, go to "Utilities" and open "Disk Utility".
Select your virtual hard disk and click on "Erase". Choose "Mac OS Extended (Journaled)" as the format and name it as you like.
Close Disk Utility and proceed with the installation of Mac OS X Mountain Lion on your virtual hard disk.
When the installation is complete, shut down the virtual machine and go back to "Settings".
Go to "Storage" and remove the image file from the CD drive by clicking on the CD icon and choosing "Remove Disk from Virtual Drive".
Start the virtual machine again and enjoy Mac OS X Mountain Lion on VirtualBox.
Note: You may need to run a different kernel file depending on your processor type (AMD or Intel). To do this, go to the folder where you extracted the image file and run either "amd-kernel.cmd" or "intel-kernel.cmd" as administrator before starting the virtual machine.
If you want to change the screen resolution of your virtual machine, you can follow 248dff8e21