VirtualBox: Full-Screen-Display and Share-Folder problem

Environment

Host: Windows 7
Guest: Ubuntu 12.04 32, Linux Mint 16 KDE 32

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How to solve Full-screen-display problem?

Install Guest Additions (VBOXADDITIONS):
From the VirtualBox’s menu –> Devices –> Install Guest Additions(user: root)

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How to solve share-folder problem?

Also, you should install Guest Additions first.

1. Create a folder named vbox-temp(or other name) in Windows 7 in which you want to share something(file, software and so on) between host and guest systems:
   From the VirtualBox’s menu –> Devices –> Shared Folders

2. Create a folder named vbox-share(or other name) in guest system(Ubuntu, Mint …) in which you want to see the files you shared in host system

   sudo mkdir /home/zfan/vbox-share
   

3. Connect the share folder in host system and guest system(In this example: vbox-temp in host and vbox-share in guest)

   sudo mount -t vboxsf vbox-temp /home/zfan/vbox-share
   

4. If you don’t want to do step 3 every time you start your guest(Ubuntu, Mint…), you can add this command to /etc/rc.local file before exit 0 line in guest nix(Linux kernal) systems

   sudo vi /etc/rc.local
   

   Then, modify rc.local like:

   ...
   sudo mount -t vboxsf vbox-temp /home/zfan/vbox-share
   exit 0
   ...