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VMware Fusion
VMware Fusion is third-party software which allows users to run virtual operating systems (such as Windows XP or Vista) on their Intel-based Macintosh computer. The virtual operating system runs as an application from within OS X allowing users to quickly switch between each environment.
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Advantages: Allows users to quickly switch between OSX and Windows.
Disadvantages: Windows may run more slowly then if it were installed directly onto the harddisk.
Bootcamp
Bootcamp is a utility included with OS X which guides users through the process of installing Windows XP or Vista onto the harddisk of their Intel-based Macintosh computer.
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