Hello how to install aditional guest for ubuntu how im virtual box
I need for ricing please and thank you
Because I’m lagging my cursor and also lagging in ubuntu thank you
Back again and racing towards ricing. 
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It is called virtualbox-guest-additions
see here
https://www.virtualbox.org/manual/ch04.html
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Stop posting multiple new topics about the same thing, you already have one:
I will delete any repeat posts, please stop.