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In 2006 Apple switched the Mac platform from proprietary PowerPC processors to standard Intel x86 chips -- the same ones that had traditionally powered most Windows PCs. Later that year, the company released Boot Camp, a free utility that allowed Windows XP to be installed on the new Intel-based Mac hardware and dual booted with Mac OS X. (Boot Camp later supported Windows Vista and then Windows 7.) Naturally, Microsoft didn't object because Boot Camp required a Windows license.
Photo credit: Apple
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