Mac Sequoia 15.2 Update and Screen Mirroring

10 January 2025
By Bryan Reed

Mac OS’s recent update Sequoia 15.2 has added new functionality when connecting to an external display, like a projection screen or monitor. When you update your Mac to Sequoia 15.2 , and please do, you may notice an icon in your tray (upper right corner of your screen) that looks like this:

two rectangles overlapping to simulate two displays over a blue background

This is the icon for ‘screen mirroring,’ and it is still available in the control center.

Menu of Mac Sequoia Control Center, with yellow arrows highlighting the top right icon for control center and another yellow arrow pointing to the Screen Mirroring option

The access to screen mirroring (sometimes called ‘screen share’) and display settings has moved to a more obvious place and shows up in bright blue when you are projecting. It may stay in your tray in simple white when you are not projecting.

top menu bar of a Mac Sequoia screen, with the blue icon with overlapping rectangles emphasized through a yellow arrow.

This new location will make displaying your screen or changing what you are displaying in classrooms and other places more straightforward than it was previously.

Apple also added a choice that wasn’t as easily available: now, if you connect to a display via an HDMI cable or wirelessly over AirMedia you may receive a pop-up asking how you want the display to work. Your choices will be ‘Entire Screen’ (mirrored), ‘Extended Display’, or you can choose to share a specific window.

Start Mirroring menu, including the words:  What do you want to show on, the choices:  Entire Screen, Window or App, and Extended Display with associated icons, the sentence Everything you can see on your screen will be visible on, and the two button options Cancel and Start Mirroring.

Once you are projecting your screen, you may change your choice by selecting one of the options that will appear at the bottom of the screen mirroring drop-down. Choose ‘Change’ and the choice box above will appear; choose ‘Stop Extending’ and you will no longer be projecting your screen.

Desktop of Sequoia, with Screen Mirroring menu open.  Menu shows options to Mirror or Extend to, what the current extension is, the buttons Change and Stop MIrroring, 4 display options and at the bottom of the menu the link to Display Settings.  The Change button has a yellow arrow pointing to it for emphasis.