os x 10.9 mavericks operating system
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the latest version of apple's mac os mavericks operating system is currently compatible with most snow leopard computers (os x 10.6) or later.
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instead of earning an inadequate profit from operating system upgrades, apple will make a profit from buying and selling apps on the app store and services like icloud or itunes match ...
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os x mavericks is declared completely free by apple and users can download it directly from the app store. this is very good news for many users, but it is also the reason for the upgrade to be overloaded since its release. users should back up all data before upgrading to avoid risks.