Or the HD transplant method: setup a Lion VM, pull the hard drive from the macbook and connect it to a computer, boot the OSX Lion installer in a virtualmachine and chose that disk to install onto, when finished put the drive back into the macbook. UniBeast is a handy Utility that helps you create a Bootable USB pen drive for easy installation of Mountain Lion OS X 10.8 on PC. Here’s what you need: UniBeast / Multibeast. Download it from Tonymac forums and install to /Applications. Access to an operational OS X system. (This can be your friend’s macbook or another hackintoshed system). At the Boot menu, press the enter key (or return key) to start the OS X Mountain Lion installer. If you are trying to install OS X Mountain Lion on a computer using an AMD or Intel Atom processor, you’ll have to type the boot flag amd (for AMD processor) or atom (for Atom processor).
OS X 10.7 (Lion) is no longer available for purchase from the MacApp Store. If you have an earlier version of Mac OS X and yourcomputer meets the systemrequirements for OS X 10.10 (Yosemite), you can upgrade directlyto that version instead; see ARCHIVED: How do I install or upgrade OS X 10.10 (Yosemite)?
If your computer does not support Yosemite or you would rather haveLion, you may still be able to purchase it directly from Apple(1-800-MY-APPLE).
command-runtil the gray Apple logo appears.
Restart your computer, and immediately hold down
command-r until the gray Apple logo appears.