The import process may take a couple of minutes to complete, just enough time to grab a cup of coffee I’d say.If you have any trouble the VirtualBox documentation is here:
https://www.virtualbox.org/manual/ch01.html#ovf
NOTE – The virtual machine is configured to use 8GB memory and the network interface may appear as NAT. Please revise the memory to suit and change the NAT adapter to Bridged.
Important Note regarding Ext4:
If your Virtualbox host is Linux and your VMs are stored on XFS or Ext4 file systems, then it is
absolutely necessary that you enable the “Host I/O Cache” for all virtual disk controllers after importing the OVF file, or you run the risk of file system corruption in your guest. On one of our test systems (Linux kernel 3.14.23, Virtualbox 4.3.14) the VM wouldn’t even fully get through the first boot before the virtual disks got corrupted – but with Host I/O Cache on everything is fine.
Below is an example of how to enable Host I/O Cache using VirtualBox: