vboxadd.sh failed modprobe vboxguest failed.
virtualbox安装增强功能报错：
1 | vboxadd.sh failed modprobe vboxguest failed. |
解决方法：
1 | yum install dkms binutils gcc make patch libgomp glibc-headers glibc-devel kernel-headers |
then
1 | yum install kernel-devel |
or
1 | yum install kernel-PAE-devel |
Then
1 | re-run VBoxLinuxAdditions.run. |