I'm still experimenting with VirtualBox ...
I used the following procedure to successfully install VirtualBox 5.1 in a Fedora 24 Host and Windows 7 Guest. However, the list of USB Device Filters is cleared after a reboot/shutdown. Also, the Guest OS crashes frequently. The shared folder configuration is permanent. If I execute "# /usr/lib/virtualbox/vboxdrv.sh setup" then I can reconfigure USB Device Filters, and the Guest doesn't crash. How can I make the list of USB Device Filters permanent and stop the Guest crashing? Fedora data is encrypted and the default machine folder is /home/Documents. I appreciate any help.
VirtualBox 5.1.4 Installation
[Install VirtualBox Repository]
cd /etc/yum.repos.d/
wget http://download.virtualbox.org/virtualbox/rpm/fedora/virtualbox.repo
[Install Dependency Packages]
dnf update
dnf install binutils qt gcc make patch libgomp glibc-headers glibc-devel kernel-headers kernel-devel dkms
[Install VirtualBox 5.1.4]
dnf install VirtualBox-5.1
[Rebuild Kernel Modules]
/usr/lib/virtualbox/vboxdrv.sh setup
Add user to vboxusers group. Replace user_name in the following command with the user's name.
usermod -a -G vboxusers 'user_name'
[Install VirtualBox Extension Pack]