Click Next, select the destination drive and install it. From here the installation is the same as normal. Select the orange option “Mac OS X” and you will start the OS X Mountain Lion installer. When you’re done, restart your Mac and hold the Option key to bring up the Start menu: However, 20 to 30 minutes are not uncommon. This can take a while depending on how fast the drive and Mac are.
#Mac os x mountain lion installer mac os x#
![mac os x mountain lion installer mac os x mountain lion installer](http://leimobile.com/wp-content/uploads/2012/06/osx_mountain_lion___.jpg)
Now select the formatted USB drive on the left and click on the “Recover” tab.Select the USB drive from the left menu and click the Erase tab, choose Mac OS X Extended (Journaled) as the format, then click the Erase button in the corner.Launch Disk Utility and connect a USB drive to the Mac.Double-click InstallESD.dmg to place it on the desktopĬreate the OS X Mountain Lion installation drive.Open the “Contents” folder, then “SharedSupport”.Go to the / Applications / directory and right click on “Install Mac OS X Mountain Lion.app” and select “Show Package Contents”.Download OS X 10.8 Mountain Lion from the App Store.Download OS X Mountain Lion and extract the DMG file If you have already extracted the DMG for installing Mac OS X Mountain Lion, skip these first steps and continue creating the following bootable CD.
![mac os x mountain lion installer mac os x mountain lion installer](https://prosenergy981.weebly.com/uploads/1/2/6/5/126593221/397633524.jpg)
We’re going to walk through the process here, but don’t forget to check the OS X 10.8 system requirements for the target Mac before you begin. Fortunately, it is still possible to create a bootable OS X 10.8 Mountain Lion installer from any USB drive, be it a flash key or an external hard drive.īy creating a bootable installation drive, you can perform clean OS X 10.8 installations, install them on separate partitions, and install OS X Mountain Lion on Macs that don’t have an Internet connection. OS X 10.8 Mountain Lion is offered exclusively through the App Store, a familiar area for Apple as OS X Lion was also offered.
#Mac os x mountain lion installer how to#
Read the tutorial on creating a bootable OS X 10.8 Mountain Lion USB installation driveĪfter many inquiries from our users, here is a guide on how to create a bootable OS X 10.8 Mountain Lion USB installation drive.