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I just installed ubuntu 14.04 on a virtual box but can't resize the screen so I want to install guest additions. I can't open a terminal window because I can't access the "start" button and when I type use alt + ctrl + T, the terminal does not open. This means I can't resize screen until I install guest additions but I can't install guest additions without resizing the screen.

Any ideas for how to fix this?

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  • Press ctrl+alt+f1, this will start a command line interface (a big full screen terminal) then, from here you can install the guest additions then ctrl+alt+F7 will take you back to the desktop, when you are finished
    – Mark Kirby
    Aug 1, 2015 at 5:42
  • Did you see this post: askubuntu.com/questions/22743/… ?
    – Takkat
    Aug 1, 2015 at 7:53

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You could also download the guest additions .iso file for your version of VirtualBox mount it inside and install it from there.

Go to this link find your version and download VBoxGuestAdditions_x.x.x.iso.

Then in the lower right corner of the VirtualBox window you should see a dvd icon, click on that and navigate to the .iso file.

After that start up ubuntu and when it loads open a file browser and navigate to the disk and search for a .sh file corresponding to your os (linux, windows etc.) make sure it is an executable file (right click then propities and check execute file as program is checked) and run it.

After it is finished just power off, unmount the disk and it should be working on the next start up.

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  • while this may be the correct answer it would be useful to include the information on downloading, mounting and installing the guest additions in your answer, to help other users.
    – Mark Kirby
    Aug 1, 2015 at 5:38

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