shared folder between virtualbox and host

1. Create a folder on host like this:

    F:\Shared

2.On VirtualBox Manager:

   Settings-Shared Folders-Add shared folder

   Folder Path: select the one you create above

   Folder Name: use the default one

   tick "Auto-mount"  and "Make permanent" and then save it.

3.Open terminal on Ubuntu on VirtualBox:

   sudo mount -t vboxsf Shared zhiguang/Win_Lin/

   # zhiguang/Win_Lin/ is the corresponding folder for Shared, you should create it before running this command

   then once you put files in  F:\Shared, you can share and edit them in zhiguang/Win_Lin/ immediately.
  

"The system is running in low-graphics mode" for Ubuntu on VM VirtualBox

When I installed Ubuntu Desktop 12.04 LTS into VirtualBox, it prompts "The system is running in low-graphics mode". I tried 6 soutions which solved the problem for other people but not me. Although I do not the exactly intrinsic reason, the following command finally served me well:

sudo apt-get update
sudo apt-get upgrade

sudo reboot

I hope it can also help you.

Full screen for ubuntu on VM VirtualBox

I have VM VirtualBox on Win 7, and Ubuntu on VM VirtualBox. By default, the ubuntu could not be displayed as fullscreen. But there is way to make it seem as the ubuntu os is directly installed on your PC hardisk.

1. Installing Guest Additions for full screen

   [Device]--->[Install Guest Addtions]

2. After some configure by the machine, you can open the Guest Additions folder which should be on your Desktop in Ubuntu with name like this: VBOXADDITIONS_#

3. Open terminal, and cd into this folder VBOXADDITIONS_# by:

cd  /media

cd  VBOXADDITIONS_# 

sudo sh VboxLinuxAdditions.run

4. Restart the ubuntu.
you can see the ubuntu is enlarged filling up the whole VirtualBox. However the VirtualBox window frame still exists, you can implement the real full screen by HOST+F,  which would make  the VirtualBox window frame  disappear. Another  HOST+F will bring the window frame back again. By default in Ubuntu, the HOST key is the Right Ctrl