I installed Virtualbox 5.2.8 on macOS High Sierra and downloaded HDP_2.6.4_virtualbox_01_02_2018_1428.ova and imported it. When I try to start "Hortonworks Docker Sandbox HDP" on VB, I am getting the below error.
"Kernel driver not installed (rc=-1908)
Make sure the kernel module has been loaded successfully.
VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT."
I did not realize that my virtualbox was not installed successfully before...After following the below instruction, it worked!