title: minishift error under windows 8, vm cannot be accessed?
body: <p>Here is my configurations</p>
  
  <p>Windows 8
  virtualbox 5.2.14
  minishift-1.20.0-windows-amd64</p>
  
  <p>Here are the messages I got when I tried to start minishift:</p>
  
  <blockquote>
    <p>minishift start --vm-driver virtualbox
    -- Starting profile 'minishift'
    -- Check if deprecated options are used ... OK
    -- Checking if <a href="https://github.com" rel="nofollow noreferrer">https://github.com</a> is reachable ... OK
    -- Checking if requested OpenShift version 'v3.9.0' is valid ... OK
    -- Checking if requested OpenShift version 'v3.9.0' is supported ... OK
    -- Checking if requested hypervisor 'virtualbox' is supported on this platform ... OK
    -- Checking if VirtualBox is installed ... OK
    -- Checking the ISO URL ... OK
    -- Checking if provided oc flags are supported ... OK
    -- Starting local OpenShift cluster using 'virtualbox' hypervisor ...
    -- Starting Minishift VM ...................................................... FAIL E0708 00:03:28.368248    7292 start.go:414] Error starting the VM: Error starting stopped host: Too many retries waiting for SSH to be available.  Last error: Maximum number of retries (60) exceeded. Retrying.
    Error starting the VM: Error starting stopped host: Too many retries waiting for SSH to be available.  Last error: Maximum number of retries (60) exceeded</p>
  </blockquote>
  
  <p>It seems the VM is running but for some reasons not accessible. Any ways to fix this? Thanks!</p>