There are two ways to keep the Mountain Lion set up for installation:ġ. Like the previous Mountain Lion's update, this time too, the installer disappears from the applications folder as soon as the update is finished. Having a hard copy of the installer will be useful in case you have to do a clean install of the system of want to install Mountain Lion X on a hacked Machintosh. Though after purchasing your copy of Mountain Lion X from the app store you can install the OS n number of times afterwards, but if you would prefer to keep an offline backup of it then here are the steps to make a bootable copy of Mountain Lion X on your USB or DVD. Here are the steps to burn the Mountain Lion X on your USB or DVD. You can follow us on Twitter or join our Facebook fanpage to keep yourself updated on all the latest from Microsoft, Google and Apple.Once you have purchased your copy of Mountain Lion X you might want to make a physical copy of it on CD or in USB drive. If USBs aren’t your thing, you can follow our guide on how to make OS X Lion bootable DVDs. Pat yourself on the back for a job well done! If you made your own flash drive following our guide, you just saved $40, my friend.

You may then follow Steps 11 and 12 to install Lion on all your Macs.Īpple will make $69 USB flash drives of Lion available at Apple Stores in August. Step 12: Follow the on-screen instructions to install OS X Lion. You can now boot into your Flash drive from there. Hold the “Option” key on your keyboard when you hear the iconic OS X startup chime. Step 11: Reboot your Mac with the USB drive plugged in. This will create the intended Lion bootable USB flash drive Step 10: Click Restore and type in your password.

Step 9: Choose USB drive you plugged-in in Step 5 as “Destination” with the InstallESD.dmg file as “Source”. Step 8: Once the drive has been formatted, click on “Restore” (it’s right next to where you clicked on “Partition in Step 5). ( NOTE: This is will erase all data on your USB flash drive) Now click on Apply at the bottom right to start formatting. Select “GUID Partition Table” and press OK. Step 7: Now click on “Option” at the bottom. Choose “Mac OS Extended (Journaled)” from the left. Step 6: Select “1 Partition” from the Volume Scheme dropdown menu.

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