Install VirtualBox 4.0.8 on Fedora 15/14, CentOS/Red Hat (RHEL) 5.6/6 Virtualbox-logo-smallOracle VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. VirtualBox is a general-purpose full virtualizer for x86 hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software. VirtualBox supports a large number of guest operating systems: Windows 3.x, Windows NT 4.0, Windows 2000, Windows XP, Windows Server 2003, Windows Vista, Windows 7, DOS, Linux (2.4 and 2.6), Solaris, OpenSolaris, OpenBSD. This guide shows howto install VirtualBox 4.0 (currently 4.1.2) on Fedora 15, Fedora 14, Fedora 13, Fedora 12, CentOS 5.6, Red Hat (RHEL) 5.6 and Red Hat (RHEL) 6. This howto uses Virtual Box yum repositories. 1. Change to root User su - ## OR ## sudo -i 2. Install Fedora or RHEL Repo Files cd /etc/yum.repos.d/ ## Fedora 15/14/13/12 and RHE...