Installation of the VirtualBox enhancements tool

Install VirtualBox.

virtualbox-4.2-4.2.0_80737_el6-1.x86_64.rpm

Oracle_vm_virtualbox_extension_pack-4.2.0-80737.vbox-extpack

dkms-2.2.0.3-1.noarch.rpm

Windows opens the VirtualBox, setting-storage-ide Controller expands the following checked-right side of the assigned optical drive to select the physical device Optiarc DVD+-RW.
Open the VirtualBox and start the installed virtual program.
1, equipment-distribution optical drive-Physical equipment Optiarc DVD+-RW.

2, equipment-Install the enhancement function.

Linux

1, click the menu bar "Device"-> installation enhancements, you can see the status bar virtual optical drive icon enabled, and there is a name called "Vboxguestaddtions.iso" of the mirror was selected.
2, click on the "Location" menu in the Ubuntu system to see the scanning of the optical disc device "Vboxadditions_3.2.4_62467.iso" (the specific version number and the version of the VirtualBox you are using.)
3, click on the CD-ROM device, it will be mounted, the desktop will appear icon, access to this CD to browse the contents, select the correct execution program to install the enhanced Feature Pack. If your guest OS is Linux, choose Vboxlinuxadditions-*.run Script, and then look at your host's CPU architecture, Intel's Choice of X86,AMD AMD64. Here our guest is Ubuntu, the host is x86 CPU. So choose Vboxlinuxadditions-x86.run Run, if you are not sure, you can choose Autorun.sh to automatically test automatic selection.