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I am using Virtual Box 5.0.0(Windows Vista) to run Ubuntu 14.04. The screen is too small (640x480) but the screen can up to 1280x768. How can I resizing it?

  • Problems with Virtualbox in Windows is off-topic here, instead superuser.com/questions/408101/… might help you. If you have installed virtual box in Ubuntu and facing the same problem see askubuntu.com/questions/184794/… – Ron Aug 12 '15 at 16:45
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    @Ron It is regarding Guest additions in Ubuntu. – Pilot6 Aug 12 '15 at 16:46
  • "using Virtual Box 5.0.0(Windows Vista) to run Ubuntu 14.04". From what I understand OP is running Ubuntu inside virtualbox installed in windows vista @Pilot6 – Ron Aug 12 '15 at 16:49
  • @Ron: read the answer... ;-) – Fabby Aug 13 '15 at 2:36
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You need to install the VirtualBox Guest Additions into Ubuntu. This gives a few benefits, including resizing the Ubuntu screen to match the host window.

Start the VM, then select from the VirtualBox menus: Devices -> CD/DVD Devices -> VBoxGuestAdditions<version>.iso. Then follow the instructions.

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    Note that you may also need to increase video RAM for the VM to get desired results – Elder Geek Aug 14 '15 at 1:50
  • Seems obvious, but also keep in mind to change the resolution in the guest OS. – Xtreme Biker Apr 10 '18 at 10:02
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    Under Virtualbox 6.0.4 on MacOS, the menu would be: Devices -> Insert Guest Additions CD image – Bon Feb 3 at 12:30

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