Using a 2009 iMac as a second display for a 2017 MacBook Pro

by

Apple added the ability to use any Mac as a secondary display for any other Mac several years ago.  When I got my MacBook Pro I wanted to try this out, but googling around sowed confusion. The video ports on Macs have changed over the years (Firewire, Mini Display, Thunderbolt, USB-C).  A lot of people commented that various combinations of iMac, MacBook and cable didn’t work for them, so I though I would list exactly what I did and what I used so someone with the same setup could also have success.

  • iMac: Late 2009, 27″ iMac, Mac OS 10.13 (High Sierra)
  • Cable: Monoprice P/N 24447 USB 3.1 Type-C to Mini DisplayPort Cable 4K@60Hz, 6 ft
  • MacBook Pro: June 2017 w/ Touch Bar, Mac OS 10.13 (High Sierra)
  1. MiniDisplay side of cable to iMac, USB-C to MacBook Pro
  2. On the iMac, press Command F2. Both screens go blank, and when it returns, the iMac should now be a secondary display
  3. On the MacBook Pro, go into System Preferences -> Displays -> Arrangement and drag the larger of the two rectangles (representing the secondary iMac display) to a location that mimics where you physically have that monitor positioned

Voila!

 

 

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

w

Connecting to %s


%d bloggers like this: