Install macOS Sierra Window Too Big for Display

I've been trying to install Sierra for a while, but every time I get to this point in the installation, the window becomes so big that I can't reach the "install" button on the bottom of the window:

User uploaded file

I've tried clicking on the disk drive and "1", but nothing on the screen seems to respond to clicking. The "zoom" function under "Window" doesn't work, the green button for zooming is greyed out, the command-minus shortcut doesn't work...I restarted the app countless times, deleted and re-downloaded it, tried safe-booting, but nothing I've tried seems to work, and it's incredibly frustrating to have something so small hold me back from installing this.

Any help would be greatly appreciated!

MacBook Pro, OS X Mavericks (10.9.5)

Posted on Dec 16, 2016 4:28 AM

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19 replies

Dec 17, 2016 12:55 AM in response to Porokiin

The installation screens cannot be resized and the green button is not selectable as you can see,and the return /enter keys do not function with these screens.

Only thing I can suggest is to change the resolution of your screen so that it fits. System Preferences >Displays>Display

click on Scaled and try the different resolutions until you see one that allows you view the bottom of the install page.might work not sure.


Did you download Sierra through the App Store

Dec 17, 2016 1:06 AM in response to Eau Rouge

Unfortunately, it doesn't look like this works, either. The default resolution is 1280x800, while the other two options are 1152x720 and 1024x640, both of which just cover up even more of the installation window. Thank you for your suggestion anyway!

And to answer your question, yes, I did download Sierra through the App Store. I've actually tried deleting it and downloading it again through the App Store, though this error has stuck around.

Dec 17, 2016 1:25 AM in response to Porokiin

Ok one more thing you could try is, if you go back to the display System Preferences as before but this time press the option/alt key down whilst clicking on the Scaled button, this should offer more resolutions, they may however be more lower resolutions which will not help, but perhaps it may just offer you a higher resolution.

In normal operations do you have the Display Resolution as Default for Display.

Dec 17, 2016 2:02 AM in response to Porokiin

Normal operations was just meant to mean everyday running of your mac.


One other thing I had a notion about was that maybe you inadvertently applied Zoom to your screen.

Have a look at your System Preferences> Accessibility>Zoom and try the keyboard shortcut to zoom out

option-command- minus, if this works and you can now see the whole install page on screen then uncheck the

Use Keyboard Shortcuts To Zoom.

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Install macOS Sierra Window Too Big for Display

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