#MOUNTAIN LION DMG MAC OS X#
#MOUNTAIN LION DMG MAC OS#

It will take some time for the drive to be written. You may have to authenticate as an administrator.ġ0. Click Restore and agree to Erase the drive and replace it with the contents of InstallESD.dmg. Mount InstallESD.dmg (by double-clicking) and drag the mounted image from your desktop into the source location (Thanks, shamguy4) Drag Untitled 1 from the left column to the destination field. Drag InstallESD.dmg into the file-open window and click Open. Next, select the new partition (Untitled 1 by default). Wait as it unmounts, partitions, and remounts your disk.Ĩ. Click the Options button at the bottom-right of the partition layout.

#MOUNTAIN LION DMG MAC OS#

Choose Format > Mac OS Extended (Journaled).Ħ. With this drive selected, click the Partition tab and choose Partition Layout > 1 Partition. Drives are listed first with their partitions listed after them, each partition indented slightly.ĥ. Prepare it for use by creating a single HFS+ partition. Attach a thumb drive to your Mac that is at least 8GB in size. Navigate to /Applications/Utilities and launch DiskUtility.Ĥ. Open a new Finder window with Command-N (File > New Finder Window). There you'll find a disk image called InstallESD.dmg.ģ. A new Finder browser window opens, showing the normally hidden material inside the installer bundle.Ģ.

Right-click (or Control-click) the installer and choose Show Package Contents from the contextual pop-up.

#MOUNTAIN LION DMG MAC OS X#

It is called Install Mac OS X Mountain Lion.ġ. Once the large multi-GB installer finishes downloading, go to your Applications folder to find the installer itself.

You can use this option-click-Purchases trick to re-download any purchase, not just Mountain Lion. An 'Install' button should appear next to Mountain Lion. Launch the App Store and option-click the Purchases tab. If not, you'll need to re-download it from the Mac App Store. If you saved a copy when you first installed Mountain Lion, great. You'll need a copy of the OS X Mountain Lion installer. This year, I update those instructions for Mountain Lion. Last year, I posted about creating a standalone Lion USB installer thumb drive.

Mountain lion dmg