Learn the version(s) of Mac OS included with PowerPC Macs produced since 01 Jan 1998. If you're looking for information about Intel Macs produced since 2006, see this article . Important : You cannot normally use a Mac OS version earlier than the one included with the computer. See " Don't install older versions of Mac OS than what comes with your computer ," as well as the related documents mentioned below. Notes Some computers shipped with different Mac OS versions at different times. When a computer was not bundled with a later version, a "-" appears in the "Later Mac OS included" column.
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