The Lion installer you just downloaded can then be found by navigating to the external drive's Applications folder. If you wish to boot back into Lion before finishing the tutorial, you can simply restart your Mac holding Option, and this time choose your main hard drive. Quit it and extract InstallESD.dmg from the Install Mac OS X Lion file found in Applications, as described above. When it's finished downloading, the installer starts automatically. Lion is available to download you won't have to pay for it again. Update to 10.6.8 using Software Update, and open the Mac App Store. Step 4: Go to Contents and jump inside the SharedSupport folder and you’ll find a file titled InstallESD.dmg. Step 3: Right click on the downloaded file and select Show Package Contents. Step 2: Once downloaded, go to the Applications folder and find the copy of Lion you just downloaded. ![]() Click and drag your USB drive (in this case. Choose to boot from Mac OS X Install DVD, and when instructed, install Snow Leopard on the external drive.Īfter your Mac reboots from the newly installed version of Snow Leopard, follow the on-screen prompts to set it up, as you would a new Mac. Step 1: Download OS X Lion from the Mac App Store. Navigate in the Finder to Applications>Utilities and launch Disk Utility. You are now ready to install the Mac OS X 10.7 Lion from the USB flash drive to a new Macbook.With your Snow Leopard install disc in the optical drive, restart your Mac with the Option key held down. If all goes well, Mac Lion OS X 10.7 will be restored in your USB flash drive. Restore the Lion 10.7 image to the USB Flash drive – Double click on the Install ESD.dmg file that you had copied on your Macbook desktop and go to the Restore tab after choosing plugged-in USB flash drive from the Disk Utility option.Ĭopy-paste or drag Mac OS X installed EXD under the InsallEMD.dmg option to the Source field (replace DVD in the picture with EXD).Ĭopy-paste or drag the USB flash drive to the Destination field.it's a good idea to burn a DVD containing OS X Mountain Lion so that you can. ![]() Click on Ok and Tap the Apply button now to begin formatting. For anyone who has one ofthe Macs from which Apple has removed the DVD. Now choose 1Partition from the drop down menu below the Partition layout option, assign a suitable name to the USB and select Mac OS extended for the Format option.Ĭlick on the Options button and select the GUID Partition Table. Plug the USB Flash drive into your Mac book – Select the just-plugged-in USB from the Disk Utility and click on the Partition tab.Click on the option to download the file once again and save the copy of the installer. To do this, go to the Mac App Store where you will find Option key, click on it and keep it pressed and select the Purchased key at the same time.Īt this point, you will be enabled with the Install option (not Installed). If you do not find this file you will have to download it again. Under this directory you will find Installed ESD.dmg file. Right click on this file and choose ‘show Package Contents’ which will direct you to the ‘Shared Support’ directory. Look for the Lion Install ESD.dmg file– Once downloading of the Lion OS is complete, navigate the cursor to the Applications folder and search for the Install Mac OS Lion.app. ![]() Get familiar with the following steps and install Mac OS X 10.7 Lion successfully.
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