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.).

Clean install mac os x lion