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       Every one wants to test the new operating system from Microsoft i.e, Windows7 which is still in Beta Version. Microsoft have made it available for everyone to download and test the latest operating system. Installing this new operating system which is still in Beta stage and testing this on your computer system which have already an operating system installed is an inconvenient procedure because it is not a stable release. 

      It is possible to install windows7 in duel boot mode with existing operating systems as windows Vista or Xp but why still take chances with the new unstable operating system. But here is a fantastic solution which makes to run Windows7 in virtual machine and this is the better solution. Only thing you have to do is download the free and open source Virtual Box.

     Using Virtual Box you can create a total new machine in the existing machine. Download Virtual Box following the above link and install it on your System. Virtual Box is available for different platforms such as Linux, Windows, OS X and Solaris. 

     When installing Virtual Box a dialogue box appear with a message such as “it is a not tested software which you are going to install”. Ignore the message by choosing CONTINUE ANYWAY.

The important thing you should have is the ISO file of the Windows7 operating system. Microsoft has stopped the distribution from Microsoft website. So, you can download it from Torrents or you can download it from any other site. Then burn the ISO file on a DVD because the file is large and cannot hold in a CD.

Open the VirtualBox and create a new machine as below in the image.

 Move to the next window by clicking on Next where you have to select memory requirements to be allocated for this new virtual machine. For Windows7 the minimum requirement of memory is 1GB and it is enough and set the memory to 1024MB which is equivalent to 1GB.

when you proceed to the next window it asks to create a new virtual drive for this OS. In my best view Select the default option “Dynamically Expand the storage” which helps in reducing disk space on your PC. The size of the disk is should be on arbitrary mode since you want to use Dynamically expanded storage.

So the task of creating memory for virtual machine is over and you have to configure in order to use windows7  that makes use of windows7 iso file. Select Virual machine by clicking on settings and then navigate to CD/DVD ROM option if you have burned the iso file on to cd/dvd else if you have the iso image on your hard drive you can navigate to that point and select the iso image.

You have now configured the virtual machine you now have to click on the start button to make the virtual machine start working.

Now the windows7 installation starts, follow the steps and install windows7 on the virtual machine. You now have installed windows7 successfully and you can now able to install the guest addition feature.This feature will help you in making better video and audio support for the new virtual machine. It also provides better integration of virtual machine with the main machine.

To install guest addition feature,  press the right Ctrl key on your keyboard then enter the Devices menu and select Install Guest Additions.

 Reboot the virtual machine because Virtual devices will start to work only after rebooting.

As you have installed Guest Additions you can now share the clipboard, or have access to files on the main operating system.Press CTRL+F in order to view the entire screen on virtual machine.