Q: Could my iMac 27" (i7 late 2009) be a slave screen for my MacBook Air (13-inch, Mid 2012) ?

Hi, today I bought an Apple 2m Thunderbolt Cable to make it work, but..... it doesn't.

Following Apple's description with the CMD-F2 keyboard combination my Macbook Air screen should be displayed on my iMac 27.

Nothing happens...

Any clue?

Macbook Air 13-inch Mid 2012, OSX Yosemite 10.10.3

iMac 27-inch Late 2009, OSX Yosemith 10.10.5

OK,but what then is exactly the difference between the two, Mni Display vs Thunderbolt ??

It is quite confusing having the same ports, same identification, the same connector plugs and still apperently another thechnical spec.

Could you explain please

Hi,  today my ordered MiniDisplay Port to MiniDisplay Port cable arrived and tried it right away.

Bad news, it still does not work!

A brand new Thunderbolt cable of $50 and now a MiniDisplay Port to MiniDisplay Port cable down the road and still not a working solution which should be working according all the advises and Apple descriptions on compatibility.

If anyone has a clue I would be greatful to hear.

Does anybody has a clue what's wrong in the above trial to have my MBA displayed on my Mac27 late 2009 through a Mini Display cable ??

The Cmd-F2 does not work.

I have done all the tricks from the Apple description but no luck.

Could there be something wrong with keyboard settings for the Cmnd-F2 combination ??

Hope to hear from somebody

Thanks

Changed the original wireless keyboard back to the Mac27" and everything works fine now.

Thank you all for your comments and support

Hi

Still one thing is not solved.

With Cmd-F2 keys I can now display my MBA at the iMac27, but going back to the iMac mode is not working yet.

Is this a known issue ?