After installing, do Software Update (under the Apple Menu) to bring Snow Leopard up to.6.8.
From there you should be able to download and upgrade to the most current OS (currently.9 - Mavericks).
This means that if a plug-in crashes, it won't crash the whole browser.
An enhanced icon view has been added, letting you preview multipage documents and even play QuickTime movies without ever leaving the Finder window.PowerPC Macs are no longer supported with Snow Leopard, however; you will need an Intel-based Mac to install the latest Mac.Apple says that File Quarantine will be automatically updated via Mac OS X's software update as new malware signatures are found in the wild.Double-click, install Ol Capitan to begin installation.New technologies, apple says a few new technologies in Snow Leopard make it worthy of the upgrade alone, with several features that Apple says will boost performance.Afterwards you can start up from your old OS or Snow Leopard by pressing option key during startup., if you wish to upgrade from Snow Leopard, make sure you are running.6.8.On our second try, the OS installed perfectly on our test machine and no files were harmed.These changes make Stacks much more useful than before and probably should have been available when Stacks was introduced.Unfortunately, for those on PowerPC systems, Snow Leopard only works with Intel Macs.The preventive maintenance program for motors Services menu in Snow Leopard has been rewritten to include only the services relevant to the application or content you're viewing.Safari 4, safari 4 has been widely available for some time, but it offers a couple of new features when running in Snow Leopard.Find out if your Mac can run Ol Capitan.Hidden among smaller tweaks are some technical improvements that result in a smoother, easier-to-use Leopard with plenty for Mac fans to be excited about.QuickTime X probably received the most interface tweaks in the Snow Leopard update.Finally you will be able to connect with Exchange Servers (without using Microsoft's Entourage but only if your company is using Microsoft Exchange 2007; many still aren't.
You can now flip through the pages of multipage PDF documents using the arrows that appear over PDF docs when you mouse over.The Dock, in addition to using Expose to find the right window, you now also have the ability to drag files from one application to another using the Dock.Apple also claims that Snow Leopard uses 7GB less space than Leopard because of better file compression paired with selective driver inclusion.Apple did more than simply give you the ability to connect, however.Click and hold on an application icon in the Dock to bring up full thumbnails of open windows in an application.Apple has also added what it calls the Grand Central Dispatch that manages data sent to multicore processors in an effort to maximize performance; Apple says the GCD will speed up any application task, from processing images in Photoshop to playing your favorite games.