Contributor(s): Peter Esser

iMac - Install Dual Boot Windows on old upgraded iMac

I recently decided to install Windows 10 on my iMac as a secondary OS. Turns out, this is more difficult than just inserting a DVD and hit install since I upgraded my mid-2011 iMac with an external SSD as the main operating system.

This is a guide on "How to install Windows 10 on an old upgraded iMac".

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