Before clean installation, backup your case sensitive data to any flash, or portable disk!Īfter you have prepared installation DVD medium, USB flash disk, and backup your data, you are able to install clean Mac OS X Mountain Lion to your Mac.
There is no way how to restore your data back. The clean installation means that all data from Mac's hard drive will be erased and disk will be formatted. Wait a minute and your installation USB flash disk with Mountain Lion will be prepared. Now click on Restore tab and select InstallESD.dmg file as Source disk image and USB flash disk as Destination. After format all data from disk will be lost! Be careful, and backup your data from the flash disk. It is required at least 8GB of capacity.Ĭlick on USB flash disk viewed in white sidebar and select Partition tab and set Partition Layout option to 1 Partition and Partition format set to Mac OS Extended (Journaled).Ĭlick the Options button and select GUID Partition Table and hit the OK button.Ĭlick on Apply button and wait until the Disk Utility finished formatting of bootable flash disk. When you have imported the InstallESD.dmg file to Disk Utility, insert flash disk to USB port. You just have to make few different steps in the Disk Utility. The procedure is the similar to the previous part of this article. The other advantage is that the installation is more faster than from DVD disk. Installation flash disk is needed to install clean Mountain Lion to Apple computers without DVD drive, such as Mac Book Air. How to create installation USB Flash Disk with Mac OS X Mountain Lion Insert clean DVD-DL (Dual Layer) medium to DVD drive and click on Burn button. Drag the InstallESD.dmg file and drop it to the left white sidebar in Disk Utility.Ĭlick on InstallESD.dmg in the left sidebar and select Burn option in Disk Utility upper icon menu. Open Mac OS X Disk Utility (Applications/Utilities/Disk Utility). Copy it away to any folder on your hard drive, for example Documents, Downloads etc. Go to the Contents → SharedSupport folder, where you will find InstallESD.dmg file. Go to the Applications folder → right click on Mac OS X Mountain Lion installer → select Show Package Contents option
App Store will offer you Mountain Lion installation to download again.Īfter the download is finished, don't run the actualization app. If you upgraded your system earlier and you are not able to download Mac OS X Mountain Lion from App Store, hold the Option (Alt) key and click on Purchased button. The list of incompatible applications can be found here.Īt first you will need to purchase and download Mountain Lion from on-line Apple App Store. How to create installation DVD with Mac OS X Mountain Lionīefore you install the Mac OS X Mountain Lion, check the compatibility of your applications, because some of them, such as older versions of Parallels Desktop or Adobe Creative Suite, need to be updated and upgraded to actual versions to prevent compatibility problems.
How to create installation USB flash disk with Mac OS X Mountain Lion.How to create installation DVD with Mac OS X Mountain Lion.The guide is divided into three chapters: This addition is installed on hidden part of Mac's hard drive, where it is sadly not safe from hard disk, or partitions failure.īut still you can create and burn your own installation DVD, or USB flash drive with Mountain Lion and about this is our article which shows how you can install clean system to your Mac even in 10.8. Instead of the physical media, Mac OS X has new Recovery Utility integrated to the system. Apple doesn't sell Mac OS X on DVD disks, which were useful to reinstall system to fresh state and clean mess from hard drive.
and 10.7., which you can use to upgrade your current OS X to Mountain Lion. It is distributed through Apple App Store for $19.99 as application, compatible with OS X 10.6. Lion, it contains about 200 new features and improvements (detailed description of Mountain Lion new major features can be found here). On 25th July 2012 Apple started distribution of new version Mac OS X Mountain Lion (version 10.8.).