The VirtualBox Guest Additions consist of device drivers and system applications that optimize the operating system for better performance and usability. i will show you in article how to install Guest additions in Fedora28/28 en Centos 7.
A1. Change to root user
A2. Make sure that you are running latest kernel
Update virtual machine kernel and reboot
## Fedora 29/28/27/26/25/24/23/22 ## dnf update ## CentOS/RHEL 7/6/ ## yum update reboot
A3. Mount VirtualBox Guest Additions
Click Devices > Install Guest Additions… on VirtualBox
Mount VirtualBox Guest Additions device
mount -r /dev/cdrom /media/
A4. Install following packages
On CentOS/Red Hat (RHEL) 7/6/5, EPEL repo is needed
## CentOS 7 and Red Hat (RHEL) 7 ## rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm <## CentOS 6 and Red Hat (RHEL) 6 ## rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm
Install following packages
dnf install gcc kernel-devel kernel-headers dkms make bzip2 perl## Fedora 21/ and Older, CentOS/RHEL 7/6/5 ## yum install gcc kernel-devel kernel-headers dkms make bzip2 perl
A5. Install Guest Additionscd /media/
#For 32-bit and 64-bit systems run following< ./VBoxLinuxAdditions.run
Output looks like following:[root@Centosradar ~]# mount /dev/cdrom /media/ mount: /dev/sr0 is write-protected, mounting read-only [root@Centosradar ~]# cd /media/ [root@Centosradar media]# ./VBoxLinuxAdditions.run Verifying archive integrity... All good. Uncompressing VirtualBox 5.2.22 Guest Additions for Linux........ VirtualBox Guest Additions installer Copying additional installer modules ... Installing additional modules ... VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel modules. This may take a while. VirtualBox Guest Additions: Starting.
You are Done
A6. Reboot guest system
Then VirtualBox Guest Additions install is ready.
i have now more options for full screen mode