Install Procedure für VirtualBox Guest Additions 6.1¶

Requirements¶

To install VirtualBox guest additions you will need the following:

• a virtual machine
• a installed and supported operating system (e.g. CentOS 8.x)
• Virtualbox 6.1.2 or above
• root-access
• a fast internet connection

Preliminary Note¶

This procedure is based on a documentation supplied by http://www.virtualbox.org/manual/ch04.html#idp11234128

Install Virtual Guest Additions¶

The VirtualBox Guest Additions for Linux are provided on the same virtual CD-ROM file as the Guest Additions for Windows. They also come with an installation program guiding you through the setup process, although, due to the significant differences between Linux distributions, installation may be slightly more complex than for a windows guest.

Installation generally involves the following steps:

CentOS preperation¶

Before installing the Guest Additions, you will have to prepare your guest system for building external kernel modules. This works similarly as described in the section called “The VirtualBox kernel module”, except that this step must now be performed in your Linux guest instead of on a Linux host system, as described there. Again, as with Linux hosts, we recommend using DKMS if it is available for the guest system. If it is not installed, use this command for CentOS systems:

1. Install EPEL repository
   see EPEL
2. update everything
   In order to fully update your guest system, open a terminal and run as root
   

   yum update
   

3. Install DKMS
   Install Dynamic Kernel Module System: (automatically installs appropriate kernel modules per selected version)
   

   yum --enablerepo epel install dkms
   

   
   Be sure to install DKMS before installing the Linux Guest Additions. If DKMS is not available or not installed, the guest kernel modules will need to be recreated manually as root whenever the guest kernel is updated using the command
   

   /etc/init.d/vboxadd setup
   

4. install the gcc and kernel development packages
   Install the GNU C compiler and the kernel development packages using
   

   yum install gcc
   

   
   followed by
   

   yum install kernel-devel
   

5. install additional tools
   Install bzip2
   

   yum install bzip2
   

6. reboot
   Reboot your guest system in order to activate the updates and then proceed as described above.
   

   reboot
   

installation of Guest Additions via X11¶

Insert the VBoxGuestAdditions.iso CD file into your Linux guest's virtual CD-ROM drive. In the "Devices" menu in the virtual machine's menu bar, VirtualBox has a handy menu item named Install guest additions, which mounts the Guest Additions .iso file inside your virtual machine.
Change to the directory where your CD-ROM drive is mounted and execute as root:

sh ./VBoxLinuxAdditions.run

Restart the guest.

reboot

installation of Guest Additions via CLI¶

On the host-side stop the guest and then insert the VBoxGuestAdditions.iso CD into the virtual CD-ROM drive via

VBoxManage modifyvm MyCentOSGuest --dvd /usr/share/virtualbox/VBoxGuestAdditions.iso

if the CD is not mounted automatically on the guest-side you may do it manually by

mount -t iso9660 -o ro /dev/cdrom /media/

sh /media/VBoxLinuxAdditions.run

umount /media/
poweroff

On the host-side you remove the CD-ROM by

VBoxManage modifyvm MyCentOSGuest --dvd none

Problem¶