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Snow Leopard also has an impressive trove of tools for blind Mac users, including one that turns a Mac laptop’s trackpad into a touchable map of the screen the Mac speaks each onscreen element as you touch it.

Buggy plug-ins (Flash and so on) no longer crash the Safari Web browser you just get an empty rectangle where they would have appeared.

When you click a folder icon on the Dock, you can scroll through the pop-up window of its contents.

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You can page through a PDF document or watch a movie right on a file’s icon.There’s now a Put Back command in the Trash, just as in Windows’ Recycle Bin.Prefixes for bytes are now used in strictly decimal meaning when describing disk space, such that an indicated file size of 1 MB corresponds to 1,000,000 bytes.Selection of columned text in PDF documents by analyzing the page layout.Exposé can display all windows for a single program by left clicking and holding its icon in the dock.Contextual menus which come out of Dock icons have more options and have a new look, with a semi-transparent charcoal background and white type.

Stacks have also been modified to include scroll-bars for folders with many files.

Stacks in Snow Leopard allow viewing a subfolder without launching Finder.

There was no major overhaul of the existing Leopard interface when Apple introduced Snow Leopard.

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Refinements to the user interface in Mac OS X 10.6 (Snow Leopard)

Improved performance of Finder, which has been rewritten in 64-bit Cocoa.

Faster startup, shutdown, installation, Time Machine backup and connection establishment.

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This has more to do with removing redundant components like printer drivers (which are downloaded on demand in Snow Leopard) than removing code specific to PowerPC.Īpple has made operating system components faster with Snow Leopard.

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An upgrade from Leopard to Snow Leopard frees up about 7GB of hard disk space.Snow Leopard (Mac OS X v10.6) only runs on Intel-based computers and not the older PowerPC chips.System Requirements for Snow Leopard vs Leopard Mac OS X 10.6 (also known as Snow Leopard) is the seventh major release of Mac OS X.Ĭlosed source (with open source components) Leopard was released on, and was available in 2 variants: a desktop version and a server version. The review also mentions the change to powers-of-ten for reporting large byte sizes (1 GB = 1,000,000,000 (10^9) bytes instead of 1,073,741,824 (2^30) bytes) in the “A gigabyte by any other name” sidebar.Mac OS X version 10.5 'Leopard' is the 6th major release of Mac OS X, Apple’s desktop and server operating system for Macintosh computers. Some third part tools provide ways to identify or find such compressed files, but this is generally not a “user level” feature. Limited access to HFS+ compression is provided in through theĪfscexpand(1) commands. Many of the Snow Leopard files are also transparently compressed. Nevertheless, “50% byte savings for each executable” is a fairly accurate estimate.

The different ISAs take different amounts of binary code to represent the same high-level program, so this does not always mean a 50% space savings for each binary.

This means that most Snow Leopard executables only store code for half the number of ISAs as the equivalent Leopard binaries. Some of them dropped two architectures (32- and 64-bit PPC). The system-installed programs have dropped support for PowerPC processors.Īt least one architecture was eliminated from every program on the system (32-bit PPC). They can be installed from DVD or downloaded when they are needed. The Rosetta PowerPC binary translator software and the bulk of the printer drivers and are not installed by default. The biggest contributors are “install on demand components”, dropping support for PowerPC processors, and “HFS+ compression”. John Siracusa’s review of Mac OS X 10.6 lists several space freeing features (on page 3).