In any case if UniBeast is giving error by saying that Mountain Lion is missing, you will have to make sure that, the file which was downloaded from Mac App Store is under the folder 'Applications'. Step 7: On the next step, run UniBeast 1.5.1 which was downloaded earlier while following Step 2. Finally click Apply following by selecting Partition. Now you have to make sure that, Mac OS Extended(Journaled) is being selected under the format header. Step 6: You can either name your USB drive containing Mac OS X Mountain Lion (10.8), by going to the Disk Utility window on the right side ans selecting the option for naming.

Step 5: Under the partition menu, select options and check the box of the option 'Master Boot Record' and Click Ok. Step4: Now you have to select '1 Partition' option, which can be found on 'current' drop down menu. In order to create the bootable USB Drive, plug the formatted USB flash drive into your Mac and navigate to 'Applications> Utilities> Disk Utility' and upon reaching the destination, look for your relevant USB drive on the column of interface and highlight it. Step 3: Once you have downloaded the above softwares, you then have to create a bootable USB which will be containing 'Mac OS X Mountain Lion (10.8)'. Step 2: Next step for you is to download and have the current version of UniBeast which is available for you from the download section of the website:. Download the original copy of Mac OS X Mountain Lion (10.8) from here using your registered Apple ID. Mac OS X Mountain Lion (10.8) is available for you at Mac App store, you can download it for $19.99. Step 1: The important thing that you need is to have your own copy of Mac OS X Mountain Lion (10.8) and 8GB storage capacity of USB flash drive.

ğinally you will need a PC which is capable of running OS X Mountain Lion.

It is recommend for you to have at least a 8GB USB Flash Drive.

You should then create an UniBeast USB drive.

In order to download OS X Mountain Lion, you should have an access to Mac App Store.

Here is the step by step guide for you to install OS X mountain Lion on your PC. Now while talking about the installation process, It has got a long and complicated installation process. OS X 10.8 Mountain Lion has been released by Apple, which is the latest release from them.

Macos 10.8 installer