TTabby

Q: UnPlug 2nd monitor?

I recall seeing instructions to unplug all peripherals before installing a new OS.

I use a 2nd monitor with my 21.5 inch iMac.

I guess I would shut down, unplug the HDMI cable and power to the 2nd monitor and in display/Prefs. just set it up as having 1 monitor ?

A link to official Apple install instructions, would be nice too.

tia

iMac (21.5-inch, Late 2012), OS X El Capitan (10.11.6), iPhone 5s, Logic Pro X

Posted on Sep 22, 2016 8:19 AM

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Q: UnPlug 2nd monitor?

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  • by rkaufmann87,Solvedanswer

    rkaufmann87 rkaufmann87 Sep 22, 2016 9:32 AM in response to TTabby
    Level 9 (58,729 points)
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    Sep 22, 2016 9:32 AM in response to TTabby

    You don't need to unplug the external display to update OS X. Please click the link at the top of this page the starts with Announcement regarding upgrading to Sierra and follow the directions there.