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Fedora: VirtualBox 4.3.26 on Fedora 21/20, CentOS/RHEL 7.1/6.6/5.11

VirtualBox 4.3.26 on Fedora 21/20, CentOS/RHEL 7.1/6.6/5.11

Oracle 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
  • Windows 8
  • Windows 8.1
  • DOS
  • Linux (2.4, 2.6, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11)
  • Solaris
  • OpenSolaris
  • OpenBSD
This guide shows howto install VirtualBox 4.3 (currently 4.3.26) on Fedora 21/20/19/18/17, CentOS 7.1/6.6/5.11, Red Hat (RHEL) 7.1/6.6/5.11. This guide uses Virtual Box own yum repositories.
Note: Fedora 16 users can install VirtualBox 4.2, Fedora 15/14 users can install VirtualBox 4.1, Fedora 13 users can install VirtualBox 4.0 and Fedora 12 users can install VirtualBox 3.2.

1. Change to root User

2. Install Fedora or RHEL Repo Files

3. Update latest packages and check your kernel version

Update packages
Check that that you are running latest installed kernel version
Output of following commands version numbers should match:
Note: If you got kernel update or run older kernel than newest installed then reboot:

4. Install following dependency packages

CentOS 7/6/5 and Red Hat (RHEL) 7/6/5 needs EPEL repository, install it with following command:

5. Install VirtualBox Latest Version 4.3 (currently 4.3.22)

Note:
This command create automatically vboxusers group and VirtualBox user must be member of that group.
This command also build needed kernel modules.
Rebuild kernel modules with following command:

6. Add VirtualBox User(s) to vboxusers Group

Replace user_name with your own user name or some another real user name.

7. Start VirtualBox

Use launcher from menu or simply run:

Troubleshooting

If you have problems with KERN_DIR parameter or your kernel directory is not automatically detected then set KERN_DIR environment variable manually, using following method: