Locate the saved Lion installer in your Downloads folder. The format process can take up to several hours depending upon the drive size.ģ.

Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.Click on the Erase tab in the DU main window. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list.Click on the Partition button and wait until the process has completed. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button.

Under the Volume Scheme heading set the number of partitions from the drop down menu to one.

Otherwise, click on the Partition tab in the DU main window. SMART info will not be reported on external drives. If it does not say 'Verified' then the drive is failing or has failed and will need replacing. Note the SMART status of the drive in DU's status area.

After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list.

Open Disk Utility in your Utilities folder.

Get a USB flash drive that is at least 8 GBs. You must do this because the installer deletes itself automatically when it finishes installing Lion.Ģ. Move the copy into your Downloads folder. Go to your Applications folder and make a copy of the Lion installer. After Lion downloads DO NOT click on the Install button. After downloading Lion you must first save the Install Mac OS X Lion application. You may wish to make a bootable USB stick to accompany the computer.ġ. You need to copy the downloaded installer app to another location because the installer deletes itself upon completion. Some features require an Apple ID terms apply.Īre my applications compatible? See App Compatibility Table - RoaringApps. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,ģ. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.ġ. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. The cost is $19.99 (as it was before) plus tax. You can purchase Lion at the Online Apple Store. After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store.Īn alternative to the above is installing Lion: You will be sent physical media by mail after placing your order.

You can purchase Snow Leopard through the Apple Store: Mac OS X 10.6 Snow Leopard - Apple Store (U.S.). The model you have must have come from the factory with OS X 10.6.2 or earlier in order to use the retail version describe below. If Snow Leopard will run on it, then see the following.

Wiping mac hard drive