I am VirtualBox on windows 7.

The VM has Ubuntu32bit (latest version) running.

I am unable to maximimze the Ubuntu window.

Here's a screen shot of what I see:

enter image description here

Please, please go easy on me! I'm a microsoft guy, and JUST started with linux.

  • 3
    Possible duplicate? askubuntu.com/questions/22743/…
    – fossfreedom
    Oct 25, 2012 at 20:25
  • Yes, guest additions would do it. Oct 25, 2012 at 20:29
  • 1
    I think this question is not a duplicate, because I would never have thought of fossfreedom's solution when asking the question. The link is not evident at first.
    – Agmenor
    Oct 25, 2012 at 20:31
  • @fossfreedom i did as stated in the link you provided and no change, i will now take the suggestion below thanks! Oct 25, 2012 at 20:42
  • @AbrahamVanHelpsing any other suggestions?? Oct 25, 2012 at 21:13

2 Answers 2


As fossfreedom indicates in a comment, it is better to install the Virtualox Guest Additions first. See this question to do so: How do I install Guest Additions in a VirtualBox VM?.

After that, if you still have your problem, try changing the resolution of Ubuntu inside Ubuntu:

  • Go to the Dash Menu (the big Ubuntu button in the top-left corner).
  • Then type "Resolution" or "Displays" to see the "Displays" app.
  • Launch it by clicking on it.
  • You should then be able to augment the resolution.
  • thank you ! the max display has already been set at 1024x768! what else shoudl i try? i did get the guest additions. do i need to restart windows? Oct 25, 2012 at 20:44
  • It should be sufficient to restart your Ubuntu guest for additions to take effect. Then turn fullscreen with <hostkey> + F or scale mode with <hostkey> + A (hostkey is <right Ctrl> key in your case).
    – Takkat
    Oct 25, 2012 at 21:20
  • thank you very much, that did SOMETHING, it made the background of virtualbox instead of grey, it made it black, but the linux is still th esame size Oct 25, 2012 at 21:25

here's what worked!!

sudo apt-get install virtualbox-ose-guest-utils virtualbox-ose-guest-x11 virtualbox-ose-guest-dkms
  • 2
    funny how hard you need to dig to find a solution to a problem that is very widely encountered. i guess google's algorithm isnt perfect Jun 27, 2013 at 20:20
  • 2
    It's no longer "ose" now, just sudo apt-get install virtualbox-guest-utils. It pulls in dkms. Dec 1, 2014 at 8:54

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