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Mac OS X 10.4 Tiger is the fifth major release of Mac OS X, Apple's desktop and server operating system for Mac computers. Tiger was released to the public on April 29, 2005 for $129.95 as the successor to Mac OS X Panther. Some of the new features included a fast searching system called Spotlight, a new version of the Safari web browser, Dashboard, a new ‘Unified’ theme, and improved support for 64-bit addressing on Power Mac G5s. Tiger shocked executives at Microsoft by offering a number of features, such as fast file searching and improved graphics processing, that Microsoft had spent several years struggling to add to Windows with acceptable performance. Tiger was included with all new Macs, and was also available as an upgrade for existing Mac OS X users, or users of supported pre-Mac OS X systems. The server edition, Mac OS X Server 10.4, was also available for some Macintosh product lines. Six weeks after its official release, Apple had delivered 2 million copies of Tiger, representing 16% of all Mac OS X users. Apple claimed that Tiger was the most successful Apple OS release in the company's history. At the WWDC on June 11, 2007, Apple's CEO, Steve Jobs, announced that out of the 22 million Mac OS X users, more than 67% were using Tiger.〔(【引用サイトリンク】title=WWDC 2007 Keynote )〕 Apple announced a transition to Intel x86 processors during Tiger's lifetime, making it the first Apple operating system to work on Apple–Intel architecture machines. The original Apple TV, released in March 2007, shipped with a customized version of Tiger branded "Apple TV OS" that replaced the usual GUI with an updated version of Front Row. Tiger was succeeded by Mac OS X Leopard on October 26, 2007, after 30 months, making Tiger the longest running version of Mac OS X. The last security update released for Tiger users was the 2009-005 update.〔(【引用サイトリンク】title=Security Update 2009-005 (Tiger PPC) )〕〔(【引用サイトリンク】title=Security Update 2009-005 (Tiger Intel) )〕 The next security update, 2009-006〔(【引用サイトリンク】title=About Security Update 2009-006 / Mac OS X v10.6.2 )〕 only included support for Leopard and Snow Leopard. The latest supported version of QuickTime is 7.6.4. The latest version of iTunes that can run on Tiger is 9.2.1, because 10.0 only supports Mac OS X Leopard and later.〔(【引用サイトリンク】title=iTunes 10 )〕 Safari 4.1.3 is the final version for Tiger as of November 18, 2010. Despite not having received security updates since then, Tiger remains popular with Power Mac users and retrocomputing enthusiasts due to its wide software and hardware compatibility, as it runs on a wide variety of older machines and is the last OS X version that supports Classic Environment, a Mac OS 9 compatibility layer.〔(【引用サイトリンク】title=6 Years With Tiger )〕 ==System requirements== Tiger was initially available in a PowerPC edition, with an Intel edition released beginning at 10.4.4. There is no universal version of the client operating system, although Tiger Server was made available on a universal DVD from version 10.4.7. While Apple shipped the PowerPC edition bundled with PowerPC-based Macs and also sold it as a separate retail box, the only way to obtain the Intel version was to buy an Intel-based Mac bundled with it. However, it was possible to buy the ‘restore’ DVDs containing the Intel version through unofficial channels such as eBay, and officially through Apple if you could provide proof of purchase of the appropriate Intel Mac. These grey colored ‘restore’ DVDs supplied with new Macs, are designed to only restore on the model of Mac that they are intended for. The retail PPC-only DVD can be used on any PPC-based Mac supported by Tiger. The system requirements of the PowerPC edition are: *A PowerPC G3, G4, or G5 processor running at 300 MHz or faster *Built-in FireWire *At least 256 megabytes (MB) of RAM, 128 MB can run it unofficially though (512 MB or 1 GB recommended) *At least 3 GB of available hard disk space; 4 GB of disk space including the Xcode 2 Tools, 2 GB for the minimal install *DVD-ROM drive (CD-ROM exchange was available; offer ended on March 20, 2007) Tiger removed support for older New World ROM Macs such as the original iMacs and iBooks that were supported in Panther; however it is possible to install Tiger on these Macs using third-party software (such as XPostFacto) that overrides the checks made at the beginning of the installation process. Likewise, machines such as beige Power Mac G3s and ‘Wall Street’ PowerBook G3s that were dropped by Panther can also be made to run both Panther and Tiger in this way. Also, Tiger can be installed on unsupported New World ROM Macs by installing it on a supported Mac, then swapping hard drives. Old World ROM Macs require the use of XPostFacto to install Tiger. Tiger was the last version of Mac OS X that supported the PowerPC G3 processor. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mac OS X Tiger」の詳細全文を読む スポンサード リンク
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