Mac OS X Snow Leopard Review

Mac OS X Snow Leopard Packaging

The Macintosh faithful are all abuzz with the debut of Mac OS X 10.6 Snow Leopard, Apple’s latest and greatest operating system for Macintosh computers. However, unlike its “big cat” predecessors (like Leopard, Tiger, and Panther) Snow Leopard isn’t awash in splashy new features or new ideological paradigms meant to advance the computing experience – and knock Redmond back on its heels. Instead, Apple took a breath with Snow Leopard and focused on refining its Mac OS X operating system, taking the time to get lots of details right, improve performance, and make a bunch of under-the-hood changes that will benefit Macintosh users in the long run. Improvements to the OS are highly visible in a few places, show up in a lot of little areas, and amount to an upgrade greater than the sum of its parts. The enhancements in Snow Leopard become starkly apparent when one goes back to Leopard or Tiger. After using Snow Leopard, they seem clunky and slipshod, where Snow Leopard hums along and does things right.

System Requirements and Availability

Snow Leopard’s pricing reflects the lack of glitzy new toys: Mac OS X 10.5 Leopard users can upgrade to Snow Leopard for just $29.99, which is a significantly lower price point than the $129 Apple normally charges for a new operating system. A five-license family packs runs for $49.99, and Apple is also offering a Mac Box Set with Snow Leopard, iLife ’09, and iWork ’09 for $169, with some resellers already offering discounts. Officially, the Mac Box Set is the only upgrade path for users of Intel Macs running Mac OS X 10.4 Tiger, but the regular Snow Leopard installation disc seems to work just fine. New Macs are already shipping with Snow Leopard; folks who purchased a new Mac on or after June 8, 2009, can get Snow Leopard for $9.95.

Snow Leopard will run on any Macintosh with an Intel processor and 1GB of RAM. While this covers Macs released in the last three years, it leaves owners of older systems based on PowerPC G4 and G5 CPUs out in the cold, just as Apple abandoned support for older Mac OS 9 applications in Leopard.


One area where Apple has clearly made progress is the Snow Leopard installer, omitting the perplexing “Archive & Install” options from earlier releases for a simplified click-and-be-done approach.

Mac OS X 10.6 Snow Leopard install screen

Mac OS X 10.6 Snow Leopard install screen: It doesn’t get much simpler than this.

The installer will automatically disable some software known to be incompatible with Snow Leopard, and if the installation fails halfway through (perhaps due to a power outage) the underlying Mac OS X operating system remains untouched – just relaunch the Snow Leopard installer and start again. Apple does offer custom installation options:

Mac OS X Snow Leopard installation options

Snow Leopard installation options: note the PowerPC emulator Rosetta is not installed by default.

Notice what is not enabled by default: Rosetta, Apple’s low-level emulator that lets programs written for earlier PowerPC processors run on Intel-based Macs. Although many applications are available as universal binaries that support both Intel and PowerPC CPUs natively, some very notable apps – like Adobe’s CS3 and CS4 suites – require Rosetta to run at all on Snow Leopard. Snow Leopard will not install Rosetta by default. Instead, users will be prompted to download and install Rosetta via Software Update the first time they run a PowerPC application. Depending on system configuration, that might happen as soon as Snow Leopard starts up. The installation CD also includes an optional installer for Apple’s Xcode development tools.

Mac OS X Snow Leopard: Screenshot

Something like this will greet many Snow Leopard users when they try to run PowerPC programs.

New Features

Snow Leopard may lack over-the-top new features, but it’s not lacking in new capabilities. First and foremost, the Mac OS X Finder may look much the same, but it doesn’t feel the same. Apple has rewritten it from the ground up using 64-bit Cocoa calls, which deliver a noticeable performance boost. The Finder now supports icons up to 512 by 512 pixels, with a slider on the lower right of Finder windows controlling the size. Huge icons might seem pointless, until you realize they integrate with the Finder’s preview functions, enabling users to see PDF and Word documents, images, and other files without opening other applications. You can even play movies right in an icon.

Mac OS X Snow Leopard: Movies can be played right within their icons

Movies can be played right within their icons, which can stretch up to 512by 512 pixels.

Apple’s Exposé window management feature has also been integrated into the Mac OS X Dock: Click and hold on an application in the Dock (including the Finder) to see an Exposé grid of its windows. Hover over a window and press the spacebar to zoom in on it, or release the mouse to exit Exposé and bring the window forward. Pressing Command-1 re-arranges the grid by name.

Mac OS X Snow Leopard Expose' Grid

Click and hold an application icon in the Dock to see an Exposé grid of its open windows.

The Dock’s contextual menus have also been given a new look to distinguish them from other programs, with little-used clutter moved off to a sub-menu. Stacks, a feature that enables users to drill down into folders in the Dock, are now scrollable, making the feature practical for folders with more items.

Mac OS X Snow Leopard

The Dock’s contextual menus have been cleaned up, and they’re now visually distinct from other applications’ contextual menus.

Another unsung but significant change: Snow Leopard includes rudimentary malware protection that can detect viruses, trojans, and other software that can damage a Mac. Macs have never experienced malware problems to anywhere near the degree Windows has (Apple’s current malware definitions list includes only two items), but as the Mac gets more popular it’s a question of when, not if, major malware will hit the Mac. Snow Leopard’s protection feature is built into File Quarantine technology Apple introduced with Tiger: Snow Leopard will prevent known malware from running (and tell users to delete it), but there’s no way to trigger a scan or automatically remove malware.

Other Snow Leopard improvements: iChat can now push VGA-resolution video chat through connections with less bandwidth, and the Airport menu now shows signal strengths of nearby Wi-Fi networks (press Option for geeky details!). Snow Leopard will automatically check to see whether your printer drivers are up to date, and Services (a holdover going all the way back to Nextstep) are finally first-class citizens in Snow Leopard, accessible via contextual menus. Hopefully developers will jump on the opportunity and make Services useful, rather than confusing. And windows are finally spring-loaded, so users can easily drag and drop items between windows without having to shuffle everything around.

Mac OS X Snow Leopard Aiport Menu

The Airport menu now shows the relative signal strength of all nearby networks.


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