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The biggest offenders download mac os x 10.8 terms of being incompatible with Mountain Lion—will be programs and system add-ons that integrate with or hack OS X at a low level. This will be a bigger issue for people upgrading from Snow Leopard. So be sure to check vendor websites for OS Download mac os x 10.8 Snow Leopard users only: Under previous versions of Mac OS X, Apple provided software called Rosetta that allowed PowerPC code to run on Intel Macs.

To test a clone or other bootable backup, use the Startup Disk pane of System Preferences to boot from the backup drive. To test a Time Machine or other non-bootable backup, try restoring several files—both older ones and newer ones—to make sure you can recover your data should disaster strike.

In Lion, you can check your Mac's specs using the Download mac os x 10.8 This Mac window left ; Snow Leopard users can use Mactracker to identify their Mac model right. Not sure which Mac you own or how much RAM or free drive space it has? Choose About This Mac from the Apple Menu, and then click More Info.

See our article on Mac backup plans for more info on backing up your Mac. I personally recommend creating a bootable-clone backup using SuperDuper or Carbon Copy Cloner for the task, although a Time Machine backup will do, as well.

If you have only 2GB installed, you might consider a hardware upgrade before installing OS X A word of advice here: Most reputable vendors will make it clear which RAM they offer is specifically compatible with Macs. If you need to free up space on your drive, you can use a utility such as WhatSize or GrandPerspective to help you find big files you can get rid of; and we recently provided some specific suggestions for freeing up drive space.

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Thank you Your message has been sent. Sorry There was an error emailing this page. By Dan Frakes Macworld Jul 11, How to install Mountain Lion over Leopard. What you need to know. How to Install Mountain Lion Installing Mountain Lion: Get your Mac ready for Mountain Lion How to make a bootable Mountain Lion Should you do a "clean install" of How download mac os x 10.8 install Mountain Lion over Hands on with Mountain Lion's OS X What you need Apple says Mountain Lion requires one of the following computers, already running OS X Apple OS X Mountain Lion.

Snow Leopard users should disable FileVault: Mountain Lion, like Lion before it, uses a different and much-improved approach to encryption, called FileVault 2. Apple says you can keep download mac os x 10.8 the Snow Download mac os x 10.8 implementation for previously-encrypted user accounts, but FileVault 2 is the better way to go, and what better time to make the switch than now? Disable third-party disk encryption: Most of these products interact with your drive and the OS at a low level, and an incompatibility with Mountain Lion could download mac os x 10.8 you unable to boot your Mac or, worse, unable to access your data at all.

However, the excellent Mactracker Mac App Store link makes it easy to find this information. The requirement that your Mac be running OS X The main reason for this restriction is that, like Lion, Mountain Lion will be available only via the Mac App Store —the Mac App Store requires Mac Download mac os x 10.8 X In addition, Apple recommends that you install the very latest updates to Snow Leopard download mac os x 10.8 Lion before upgrading to Mountain Lion, so be sure to check Software Download mac os x 10.8 for any available updates.

Alternatively, you could keep an old Mac on hand to run those apps when needed. How can you tell which of your applications are PowerPC programs? Any programs listed as PowerPC will not work under Lion or Mountain Lion. Read the full review. The latest version of OS X, But before you rush to install Download mac os x 10.8 Lion, you'll Mountain Lion OS X Though you can install Mountain Lion directly from your Mac's hard drive, a bootable installer Some Mac users prefer to do a "clean install" of each major new version of OS X, erasing their According to the Mountain Lion license agreement, you must have Snow Leopard Mac OS X Mountain Lion, like Lion before it, lets you boot your Mac into a special recovery mode called OS X Macworld is your best source for all things Apple.

MacBook users, of course, all have a trackpad already. I call it my Magic Gesturepad. Disk Utility can verify that your Mac's drive is healthy. Back up your Mac, and test that backup: Let me say that again: Back up your Mac, and test that backup— before installing Mountain Lion.

The editorial team does not participate in the writing or editing of BrandPosts. SponsoredPosts are written and edited by members of our sponsor community. SponsoredPosts create an opportunity for an individual sponsor to provide insight and commentary from their point-of-view directly to our audience. The editorial team does not participate in the writing or editing of SponsoredPosts. Resources Macs MacBooks Mac Desktops iPhones Blogs iPads Accessories Apps Audio Business Cameras Components Development Software Displays E-readers Home Theater iOS iPhone Accessories iPad Accessories iPods OS X Printers Networking Productivity Software Smartwatches Storage Styluses.

Utility Software Mac Apps OS X Macs. How to Install Mountain Lion Previous. Get your Mac ready for Mountain Lion OS X How to make a bootable Mountain Lion install drive. Should you do a "clean install" of Mountain Lion? Hands on with Mountain Lion's OS X Recovery and Internet Macworld Macworld is your best source for all things Apple. About Us Contact Us Mac OS X Hints Ad Choices Digital Magazines Newsletters Privacy Policy RSS Terms download mac os x 10.8 Service Agreement E-commerce Affiliate Relationships.

In Snow Leopard OS X However, Apple killed Rosetta completely when Lion was released, and it remains unavailable in Mountain Lion.

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However, given that FileVault 2 also encrypts your entire drive, you might consider download mac os x 10.8 an opportunity to migrate to FileVault 2. You should also check for updated firmware for your particular Mac model. Check for Mountain Lion-compatible updates to third-party software: If you take some time to check compatibility before installing OS X The list shows both Lion and Mountain Lion compatibility—be sure to look at the Mountain Lion column.

Macworld Jul 11, This article is part of our series of articles on installing and upgrading to Mountain Lion. Apple has released Mountain Lion OS X Getting their Macs ready for Mountain Lion. As with Lion OS X But as with every major upgrade to OS X, there are a few things you can do before upgrading to ensure that your Mac is ready to go. Apple says Mountain Lion requires one of the following computers, already running OS X Note that while the above computers can install Mountain Lion, some features, such as Power Nap, AirPlay mirroring, and AirDrop, have stricter requirements.

We give you the scoop on what's new, what's best and how to make download mac os x 10.8 most out of the products you love. BrandPosts are written and edited by members of download mac os x 10.8 sponsor community. BrandPosts create an opportunity for an individual sponsor to provide insight and commentary from their point-of-view directly to our audience.