Install virtualbox on CentOS 6

• Install dkms package from rpmforge repository

  yum --enablerepo rpmforge install dkms

  If you have not yet install rpmforge repository, see How to install rpmforge repository on CentOS.
• Dowload the repository file into /etc/yum.repos.d:

  wget -O /etc/yum.repos.d/virtualbox.repo http://download.virtualbox.org/virtualbox/rpm/rhel/virtualbox.repo

• Update the packages:

  yum update

• Find the latest VirtualBox package:

  yum search VirtualBox

• Install the latest VirtualBox package:

  yum install VirtualBox-4.2

• Start virtualbox, Applications -> System Tools -> Oracle VM VirtualBox
• Troubleshooting
  • USB (Keyboard) subsystem not working, solution:

    sudo usermod -a -G vboxusers yourusername

    then log out and log back in.