Not able to install Guest Additions 6.1.8 on CentOS7.8 (x86_65) with kernel version 3.10.0-1127.10.1.el7.x86_64. This is VirtualBox 6.1 on a Windows 10 host.

I'm using the following URLs to help with the install

https://www.if-not-true-then-false.c...e-13/#comments

https://www.tecmint.com/install-virt...s-rhel-fedora/

There is no error output, seems like it installed ok. Reboot the VM and the screen remains the same.

The only logs that appear under /var/log/messages are vboxadd-install.log and vboxadd-setup.log. Neither of these have any odd output.

The only odd thing is that under /usr/src/kernels/3.10.0-1127.10.1.el7.x86_64, there isn't a build directory. I created that directory (is it supposed to be a directory or file, I'm not sure?). However Guest Additions was not successful.

thanks

Guest Additions for CentOS are provided by the RPM Fusion repository. They even have a howto for it. Despite it saying they only have packages for Fedora, last time I checked there were packages for CentOS, too. Don't forget to uninstall "official" Guest Additions first, before installing the package from RPM Fusion: