Upgrading to Apple's Snow Leopard OS: What you need to know

With a spiffy new installer, the Mac OS X upgrade process is quicker and easier than ever

In building Snow Leopard, the latest version of Mac OS X (version 10.6), Apple focused more on under-the-hood improvements to boost speed and stability than on adding new features. That contrasts with its predecessor, Leopard (Mac OS X 10.5), which added more than 300 new features when it was released two years ago.

In Snow Leopard, Apple focused on making the OS run faster using technologies like Grand Central Dispatch (which allows a Mac with a multi-core processor to more effectively distribute work among cores) and OpenCL (which allows a Mac's graphics processors to be used for general computing tasks whenever possible), and making all the core system applications and most core components 64-bit.

But before you can appreciate Snow Leopard's performance, user interface refinements, and technology tweaks, you have to get it installed. Here's what you need to know about the upgrade process -- which in itself illustrates both UI improvements and under-the-hood advances over past versions of Mac OS X.

Can you run Snow Leopard?

The most important question to answer before upgrading to Snow Leopard is whether your Mac can handle it. First, you'll need an Intel-based Mac. (Not sure what you have? Click the Apple menu and choose About This Mac. If your processor is a PowerPC, you're out of luck; if it's from Intel, you're good to go.)

Any Intel Mac will run Snow Leopard, provided it has at least 1GB of RAM (though 2GB or more will deliver better performance) and 5GB of hard drive space. You'll also need a DVD drive for installation. (MacBook Air owners can use a DVD drive in another computer, provided they turn on CD/DVD sharing.)

It's worth noting that not all Intel Macs can make use of 64-bit processing. That's because not all Intel Macs have 64-bit processors.

The first Intel Macs shipped with either an Intel Core Duo or Core Solo chip, both of them 32-bit processors. Apple switched to the Core 2 Duo processor, which is 64-bit, across most of its product lines pretty quickly. You can check your processor model using About This Mac.

With an Intel Core 2 Duo processor and 2GB of RAM, this iMac -- still running Mac OS X 10.4 "Tiger" -- can take advantage of Snow Leopard's 64-bit processing.

This doesn't mean that early Intel Macs won't see improvements with Snow Leopard -- they will -- but they may not see as big a performance boost as newer Macs.

Any Mac users still running Tiger (Mac OS X 10.4) can upgrade directly to Snow Leopard, skipping its predecessor, by purchasing Apple's Mac Box Set, which includes Snow Leopard and the latest versions of iLife and iWork for $169. This ensures that your Mac will be able to run all the Apple tools as well as Snow Leopard.

Important: Before you upgrade, back up

Before you even think about installing the new operating system, be sure to perform a full backup of your system.

With Snow Leopard, Apple has made the installation process cleaner and more reliable than ever; the installer can even finish an installation properly if your Mac is unexpectedly powered off during the process. Nevertheless, a good backup is always prudent. If you've been using Time Machine in Leopard, you've probably got one already.

Join the PC World newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection

Tags snow leopardMac OS X

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Ryan Faas

Computerworld (US)
Show Comments

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Matthew Stivala

HP OfficeJet 250 Mobile Printer

The HP OfficeJet 250 Mobile Printer is a great device that fits perfectly into my fast paced and mobile lifestyle. My first impression of the printer itself was how incredibly compact and sleek the device was.

Armand Abogado

HP OfficeJet 250 Mobile Printer

Wireless printing from my iPhone was also a handy feature, the whole experience was quick and seamless with no setup requirements - accessed through the default iOS printing menu options.

Azadeh Williams

HP OfficeJet Pro 8730

A smarter way to print for busy small business owners, combining speedy printing with scanning and copying, making it easier to produce high quality documents and images at a touch of a button.

Andrew Grant

HP OfficeJet Pro 8730

I've had a multifunction printer in the office going on 10 years now. It was a neat bit of kit back in the day -- print, copy, scan, fax -- when printing over WiFi felt a bit like magic. It’s seen better days though and an upgrade’s well overdue. This HP OfficeJet Pro 8730 looks like it ticks all the same boxes: print, copy, scan, and fax. (Really? Does anyone fax anything any more? I guess it's good to know the facility’s there, just in case.) Printing over WiFi is more-or- less standard these days.

Ed Dawson

HP OfficeJet Pro 8730

As a freelance writer who is always on the go, I like my technology to be both efficient and effective so I can do my job well. The HP OfficeJet Pro 8730 Inkjet Printer ticks all the boxes in terms of form factor, performance and user interface.

Michael Hargreaves

Windows 10 for Business / Dell XPS 13

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?