Installing Virtual Box's Guest Additions for Cent OS 6.4

Why Guest Additions installation failed?
Virtual Box's Guest Additions for Linux based guest OS need to compile kernel modules while it is installing additional components. Your Linux need compilation tools and kernel development libraries so that installer can use them to compile kernel modules.

Packages required for installing Virtual Box's Guest Additions
Before install Virtual Box's Guest Additions, You should install compilation and kernel development tools using root account.

#yum install gcc automake libtool kernel-devel

Then mount VBOXADDITIONS image by selecting from Virtual Box's menu.

Devices -> Install Guest Additions..

Installation
After VBOXADDITIONS image has been mounted, In terminal window, go to mounted point and run installation script.

#cd /media/VBOXADDITIONS_4.X.X

#./VBoxLinuxAdditions.run

Installation should pass without [FAIL] status. Shutdown Linux and start up again.

After Linux has been started, you can do the following features come from the guest additions.

• Move the mouse into or off the guest screen seamlessly.
• Working with guest OS in full screen mode.

And by enabling some features in Virtual Box's devices menu, you can do the following tasks.

• Drag files or folders from host OS into guest OS desktop screen.
• Copy some text from application which run on host OS and then paste it into application which run on guest OS.