To review detailed information about the changes to Mac OS X included in a specific Update, click the link in the Description column corresponding to the desired Update. To access the page from which you download a Standalone Update, click the link in the Update column corresponding to the desired Update. If you burn a Standalone Update to an optical disc or copy it to a USB flash drive, its disk image must be copied to your desktop or another location on your Mac OS X startup disk in order to be installed. Standalone Updates are generally available 24 to 48 hours after the corresponding Update is available through Software Update. Mac OS X 10.7.2 to Mac OS X 10.7.4 without installing the individual Mac OS X 10.7.3 and Mac OS X 10.7.4 updates. ![]() Mac OS X 10.7 to Mac OS X 10.7.4 with one installation, as opposed to installing the individual Mac OS X 10.7.1, 10.7.2, 10.7.3, and 10.7.4 updates.For example, the Mac OS X 10.7.4 Combo Update updates: Individual Updates are also known as Delta Updates.Ĭombo Updates update the base version of a Mac OS X release to the version specified in the Combo Update, including all intermediate updates. For example, the Mac OS X 10.7.4 Update updates Mac OS X 10.7.3 to version 10.7.4. Individual Updates update one version of Mac OS X to the subsequent version. There are two types of Standalone Updates: Individual and Combo. They are downloaded to your Mac and installed by mounting the associated disk image and launching the Installer package therein. Standalone Updates enable you to apply updates to Mac OS X in lieu of using Software Update. You may have been prompted to run a firmware update while using Software Update but just in case you can check if your Firmware version is up to date on Apple’s EFI and SMC firmware updates article.This page describes Mac ® OS X Standalone Updates and provides links to such. Some Macs may require a firmware update to run Lion. If you don’t have enough “Available” space, we can help you upgrade your drive in about 1 day. ![]() To check how much free space your Mac has, select your hard drive and choose File > Get Info. You’ll need 5GB of free disk space just to download the Lion installer but you’ll want at least 20GB available to safely run the upgrade and continue using your Mac. The more RAM you install the faster your computer will run. You can view your Mac’s RAM right under Processor in the About This Mac. Officially Lion requires a minimum of 2GB of RAM to run. ![]() PowerPC Macs (such as the iBook and PowerBook) manufactured before 2006 are also not compatible. ![]() The earliest Intel Macs with Core Solo and Core Duo (without the 2) processors will not run Lion. Your processor must be an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor to run Lion. Go to the Apple in the Upper left corner of your screen and select About This Mac to view your processor’s type. Lion can only be run on certain Intel Processors. If you are running Leopard (OS X 10.5), you must buy Snow Leopard on DVD before you can update to Lion. Click the Apple in the upper left corner of your Mac and select Software Update to upgrade to 10.6.8. Your Mac must be running OS X 10.6.8 Snow Leopard in order to purchase OS X Lion from the Mac App Store. Check the following spots on your Mac before attempting to upgrade to Lion.
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