
EFI provides two distinct video interfaces: GOP (Graphics Output Protocol) and UGA (Universal Graphics Adapter). Mac OS X uses GOP, while Linux tends to use UGA. VirtualBox provides a configuration option to control the framebuffer size for both interfaces.
To control GOP, use the following VBoxManage command:
VBoxManage setextradata "VM name" VBoxInternal2/EfiGopMode N
Where N can be one of 0,1,2,3,4 referring to the 640x480, 800x600, 1024x768, 1280x1024, 1440x900 screen resolution respectively.
The video mode for both GOP and UGA can only be changed when the VM is powered off and remains persistent until changed.
<key>Graphics Mode</key>
<string>1920x1080x32</string>
aClockworkOrange wrote:Also I found that you can't use 'spaces' in your vm name, for example use:
VBoxManage setextradata “elCapitainNew" VBoxInternal2/EfiGopMode
instead of
VBoxManage setextradata “el capitain new" VBoxInternal2/EfiGopMode 3 (this is not going to work)
VBoxManage list vms
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