Q: I have just bought an apleTV. I can't find the mirroring button on my toolbar, however I can mirror using Itunes, I have searched in systempreferences -> Displays but it won't show me the Device. I have already tried restarting all. What am I doing wrong?

Is your imac recent enought so support using an AppleTV as a desktop.

May want to check the following http://support.apple.com/kb/HT5404?viewlocale=en_US&locale=en_US

May also want to make sure the option to show mirroring/etc in the toolbar via system preferences>displays.

Sorry if you are already aware of these.

I have the same issue - does anyone have a solution?

Thank you

A supported Mac

AirPlay Mirroring in OS X takes advantage of the hardware capabilities of recent Macs to deliver high frame rates while maintaining optimal system performance. The following Mac models support AirPlay Mirroring::

• iMac (Mid 2011 or newer)
• Mac mini (Mid 2011 or newer)
• MacBook Air (Mid 2011 or newer)
• MacBook Pro (Early 2011 or newer)
• Mac Pro (Late 2013)

Which Mac do I have?

• How to identify your MacBook Air
• How to identify MacBook Pro models
• How to identify iMac models
• How to identify Mac mini models

I have exactly the same problem, on a mid 2011 iMac running mac OS X lion.  The Apple Tv recognises and mirrors fine with my ipad 2 but the imac just doesn't see it and there is no option to tick a box nor does my computer even recognise the word 'mirror' or 'Airplay".

ro137483: You need OS X 10.8.5 or newer to run AirPlay Mirroring

I had a similar story...Firewall may be the issue if you got an anti-virus...I set the wireless network on McAfee from 'Public' to 'Work/Home' then all went OK!!

hope this helps...

I feel so silly! ;). Works now..thanks

No worries. Enjoy your AirPlay Mirroring