4 Guest Additions SuSE Linux Enterprise Desktop (SLED) 1. In order to fully update your guest system, open a terminal and run zypper update as root. 2. Install the GNU C compiler using zypper install gcc 3. Reboot your guest system in order to activate the updates. 4. Find out which kernel you are running using uname -a An example would be 2.6.27.19-5.1-default which refers to the “default” kernel. Then install the correct kernel development package. In the above example this would be zypper install kernel-syms kernel-source 5. Make sure that your running kernel (uname -a) and the kernel packages you have installed (rpm -qa kernel\*) have the exact same version number. Proceed with the installation as described above. Mandrake 1. Mandrake ships with the VirtualBox Guest Additions which will be replaced if you follow these steps. 2. In order to fully update your guest system, open a terminal and run urpmi --auto-update as root. 3. Reboot your system in order to activate the updates. 4. Install DKMS using urpmi dkms and make sure to choose the correct kernel-devel package when asked by the installer (use uname -a to compare). CentOS, Red Hat Enterprise Linux and Oracle Enterprise Linux 1. For versions prior to 6, add divider=10 to the kernel boot options in /etc/grub.conf to reduce the idle CPU load. 2. In order to fully update your guest system, open a terminal and run yum update as root. 3. Install the GNU C compiler and the kernel development packages using yum install gcc followed by yum install kernel-devel 4. Reboot your guest system in order to activate the updates and then proceed as described above. 5. In case Oracle Enterprise Linux does not find the required packages, you either have to install them from a different source (e.g. DVD) or use Oracle’s public Yum server located at http://public-yum.oracle.com. 59