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I am going to use Ubuntu as my main OS. Since my university requires to handle a lot of documents in MS Office format, I keep a virtual Windows 7 with Office 2010.

Since I dont own a beamer or another screen, I cant be sure if a PowerPoint presentation can be shown "out of" my virtual Windows 7.

Given that I wont be able to address a secondary screen, would mirroring still work?

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up vote 1 down vote accepted

The way Virtual Box works it will use the graphics card and monitors attached to your host computer. This means that the guest OS only has a virtual graphics adapter to operate.

To answer your question: Yes, it is definfitely possible to view the screen of your Virtual Box guest Windows on a monitor or beamer attached to your Ubuntu host computer provided Ubuntu is able to adress it (which is very likely the case). You don't even need any additional drivers for Windows. When running Virtual Box in full screen mode it will operate very similar (but slower) to a native Windows.

The present release of Virtual Box allows providing multiple virtual monitors, all of which can be displayed from the host OS. If we installed the Oracle Extension Pack to make it a PUEL-version we are even able to view the virtual screen over a network using the RDP protocol.

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That is good to know and just saved another Linux on desktop ;-) Thank you! – SDD64 Feb 25 '12 at 14:08

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