Hit the Apply button and it will create your bootable USB drive.Ĭonnect your MBAir DVD drive and boot into OS X and hold the option key when you hear the startup chime.
#Mac os x mountain lion installesd dmg download mac os x
Click on the "Restore" tab, choose the InstallESD.dmg file as the source and your flash drive as the destination. Mac OS X Mountain Lion (version 10.8) is the nineth major release of Mac OS X (now named macOS), Apples desktop and.Hit the Apply button when you're done to format your drive (note: it will erase everything on the drive). Download NameAgeTypeFilesSizeMountain Lion 10.8 InstallESD.dmg6 yearsSoftware14.05 GBOsx Mountain Lion 10.8.5 Unsuporrted Mac X16007 yearsSoftware26.75 GBMac OSX Mountain Lion 10.8.4 32 Bit Yes 32 Bit7 yearsSoftware14. You'll need this to make the drive bootable on a Mac. Hit the Options button under the partition table and choose "GUID Partition Table".Choose "Mac OS Extended (Journaled) on the left. Go to the Partition tab and select "1 Partition" from the dropdown menu.plug it in and click on it in the left-hand sidebar in Disk Utility.If you want to burn Lion to a USB flash drive: If you're burning it to a DVD, insert your DVD, select the disk image in the sidebar, and hit the "Burn" button.
Open up Disk Utility and drag the DMG file into the left-hand sidebar. Navigate to Contents > SharedSupport and look for a file called "InstallESD.dmg". Right-click on the installer and hit "Show Package Contents".The installer should show up in your Applications folder. If you do want to download before installing, borrow someone else's Mac to Sorry but I don't know of any other way to reinstall your lost data.
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