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Walkwitz Author

Level 1

4 points

Target Display Mode 10.10.3

After updating both my Late 2012 iMac and my mid 2012 MacBook Pro to OS X 10.10.3 I am no longer able to put my iMac into Target Display Mode to use it as a 2nd monitor for my MacBook. Does anyone have a solution for this, or know why I can no longer put my iMac into TDM?

Posted on Apr 27, 2015 10:46 AM

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2 replies

Level 10

103,305 points

Apr 27, 2015 1:22 PM in response to Walkwitz

Thank you for using the Apple Support Communities

Try forcing your iMac into TDM by pressing CMD + F2.

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Level 1

1 points

Jan 11, 2016 10:09 PM in response to Walkwitz

iMac 5K Target Display Mode (TDM) Solution

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Target Display Mode 10.10.3

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