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unexpected update

  1. PowerPCFan

    Oh no... did I wreck my Mac?

    So, I rebooted my Late 2015 21.5-in iMac to install Rogue Amoeba's Piezo software. It was in an endless boot loop when it tried to start up again. I eventually unplugged it and plugged it back in. Then I pressed Power and it booted just fine (after 10 minutes that seemed like days.) I logged in...