Cannot Install VirtualBox Guest Additions: Installer Hangs

Problem

For a CentOS based guest, the update of the VirtualBox Guest Additions hangs after the step: "Removing exiting VirtualBox non-DKMS kernel modules"

Solutions

• Check the log file in /var/log/VBoxGuestAdditions-uninstall.log. See if there is anything obvious reported there you can fix.
• Check if your RAM disks are valid by running the command `sudo lsinitrd`.
  • If they are not, try rebuilding broken images with `sudo dracut -f [broken-image].img [kernel version]`
• Verify you have all dependencies installed:
  • yum install dkms
  • yum groupinstall "Development Tools"
  • yum install kernel-devel
• Reinstall your Kernel image
  • List kernels `rpm -qa kernel`
  • Reinstall kernel
• Verify that you have the correct version of kernel-devel installed
  • yum remove kernel-devel
  • yum install kernel-devel-`uname -r`
  • Restart system!
• Wait!
  • Let the installation run for a while, at least 15-20 min. It might do something!