![]() ![]() Hit the Apply button to make it happen.įinally, to boot from your install disk/drive and install Mountain Lion, restart your Mac and hold the Option key down when you hear the startup chime. 7 to improve the stability, compatibility, and security of the Mac 12 (Click here), EI Capitan 10 Mac OS X Mountain Lion 10 Uploaded on 00:39:12 by xadmin One way to store or group files on a Mac is to create a Disk Image One way to store or group files on a Mac is to create a Disk Image. Now click the Restore tab and choose the DMG file as your source and the USB drive as the destination. Hit Apply to format-which will completely erase-the drive. Select the Partition tab, select “1 Partition” from the dropdown menu and choose “Mac OS Extended (Journaled)” for the format type.Ĭlick the Options button and choose “GUID Partition Table”-this will make the drive bootable and formatted correctly for the Mac. Insert the disk and select it in the sidebar in Disk Utility. If you’re burning to USB, you’ll need to first format the drive properly: If you’re burning to DVD: insert your disk, select the DMG file in the sidebar, and hit “Burn.” Skip to step 6. Open up Disk Utility from your Applications > Utilities folder and drag the DMG file into the sidebar on the left. The steps for burning Mountain Lion to disk are essentially the same as the ones for Lion:ĭownload Lion from the Mac App Store-but don’t install it yet, because of the disappearing installer issue noted above.įind the installer in your Applications folder and right-click on it then select “Show Package Contents.” Head to Contents > SharedSupport and look for the file called “InstallESD.dmg” LionDiskMaker has been around since Lion but it has recently been updated with Mountain Lion support, heads up to CultOfMac for the reminderĭIY Option: Use OS X’s Built-in Disk Utility If you don’t need the bootable aspect, you can also just copy the Installer app file from the /Applications/ directory to other Macs and it will work to perform the OS X upgrade too. Making a boot installer is really helpful if you need to install Mountain Lion on multiple Macs and don’t want to re-download it on each Mac from the App Store, or if you want to perform a clean install. Get the newest version of LinoDiskMaker free from the developer.LionDiskMaker formats the drive you point it at, remember that when you are picking a disk to make bootable for the installer. For USB install drives or SD cards the drive needs at least 8GB of space available. It’s about as simple as it gets.įor burning a boot DVD you will need a 4.7GB or larger blank DVD and a SuperDrive. After you’ve downloaded the OS X Mountain Lion installer from the Mac App Store, launch LionDiskMaker and it will locate the installer app, extract the disk image, and then make the boot disk.
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