Install older version of macOS / OSX?

App & System Services Core OS macOS

flarosa OP

Created Nov ’20

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Hi,

Is there a way I could install Yosemite or El Capitan on a computer that is currently running High Sierra? How is this done?

The computer is a spare that doesn't contain anything I need, so no problem erasing it, but I don't know how to get an installer.

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