1, download VirtualBox (mine is 4.3.26 version)
https://www.virtualbox.org/
2. Download the ubuntu ISO file (my is Ubuntu-14.04-desktop-amd64.iso)
http://www.ubuntu.com/download/
3, online to find a tutorial, this article can be.
Http://jingyan.baidu.com/article/cdddd41c5eea3153ca00e160.html
4, the installation process encountered "Unable to load R3 module" error, in the Post bar has a solution: http://tieba.baidu.com/p/3369724797
(1) Download the Uxtheme.dll file here
Http://pan.baidu.com/s/1qWM9mJM
(2) You need to replace the Win7 C:\windows\System32\ with the downloaded Uxtheme.dll file Uxtheme.dll file, but here can not be directly replaced, because the Win7 system is running, there are users said to use in the PE replacement, I did not get the PE, do not know how to get specific.
(3) My system hard disk installed Ubuntu+windows7 dual system, restart into Ubuntu, and then find the Win7 system System32 under the Uxtheme.dll file, replace it.
(4) Restart, go to Win7, continue the steps in the tutorial can be.
5, installed After, will find the window is not right, too small, this time need to install VirtualBox enhancements, tutorials are as follows:
Http://www.linuxidc.com/Linux/2011-02/31889.htm
I followed this, and the first step was fully automatic, without the complexity of the tutorial. Then restart the virtual machine and go to full screen.
6, enter the virtual machine Ubuntu (hereinafter referred to as Vbubuntu), in the Vbubuntu with ifconfig view IP address, in Windows7 with ipconfig view IP address.
Ping the IP of Win7 in Vbubuntu, can ping pass;
Ping Vbubuntu IP in Win7, timeout;
Workaround: If the virtual system is not turned on, set up two network connections in the network properties of settings, network Connection 1 is set to NAT, network Connection 2 is set to bridged Adapter (bridging network)
Restart, and then look at the IP of the virtual machine, remember the new IP that appears,
In the Win7 ping vbubuntu new IP, can ping pass;
Windows7+virtualbox install Ubuntu virtual Machine Problem Summary