如何解决 VirtualBox 在安装 VB Guest additions（安装增强功能）时遇到的问题

*** THIS IS ONLY TO RESOLVE THE ValueError ***

Hey! I stumbled across this same issue today, but was able to resolve the ValueError above. That particular issue is SELinux-related. It involves the VirtualBox installation of Guest Additions (GAs) trying to add a file context for the mount.vboxsf file when it is already set. To at least resolve that error:

1. Be sure that the GAs that come with Fedora are removed using yum, and that the kernel-devel, gcc, make, and perl binaries are installed on your Fedora VM with yum.

2. Escalate to root: sudo -i or su -

3. As root:

   1. semanage fcontext -d /opt/VBoxGuestAdditions-<VERSION>/other/mount.vboxsf

   2. restorecon /opt/VBoxGuestAdditions-<VERSION>/other/mount.vboxsf

And then run the VBoxGuestAdditions installer, and reboot. At the very least, it should not have the ValueError shown above. As far as testing some of the other functionality, let me know if that works out for anyone, because I do not use clipboards and shared folders!