How to install virtual box guest additions on Centos Linux

make sure yum repositiory is correctly configured and internet access is available from centos guest

# yum install dkms binutils gcc make patch libgomp glibc-headers glibc-devel kernel-headers

# yum install kernel-pae-devel

reinstall the vbox guest additions

# cd /media/VBOX*

# ./VBoxLinuxAdditions.run

verify services running

# service vboxadd status

# service vboxadd-service status