## configure yum repository with your RHEL7 installation DVD
yum install -y kernel-headers kernel-devel gcc perl
## re-run the installation
cd /run/media/root/VBox_GAs_6.1.10
./VBoxLinuxAdditions.run
## reboot
reboot
## Verify service is now running
## For RHEL6
service vboxadd status
service vboxadd-service status
## For RHEL7
systemctl status vboxadd
systemctl status vboxadd-service
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