How can I start VirtualBox with an image of Kali Linux?

On my Ubuntu system VirtualBox 5.0 is unable to locate the virtual optical image of Kali Linux 2.0. This is the message:

Failed to open the disk image file /home/saiyad/Downloads/Kali-Linux-2.0.0-vbox-amd64.7z.
Could not get the storage format of the medium '/home/saiyad/Downloads/Kali-Linux-2.0.0-vbox-amd64.7z' (VERR_NOT_SUPPORTED).
Result Code: VBOX_E_IPRT_ERROR (0x80BB0005)
Component: MediumWrap
Interface: IMedium {4afe423b-43e0-e9d0-82e8-ceb307940dda}
Callee: IVirtualBox {0169423f-46b4-cde9-91af-1e9d5b6cd945}
Callee RC: VBOX_E_OBJECT_NOT_FOUND (0x80BB0001)

How can I get VirtualBox to use this image?

2 Answers

Firstly, you should extract the image file. It's still a 7z file.

7z x Kali-Linux-2.0.0-vbox-amd64.7z

Then VirtualBox should recognize the extracted file (should be an ova file, based on Neil's answer).

If 7z is not installed, run sudo apt-get install p7zip-full first before running the above file.

You need to extract the compressed File.

1. Right Click on Kali-Linux-2.0.0-vbox-amd64.7z

2. Click on extract here. "extracting can take a long time."

3. Open up VirtualBox then press Ctrl + i

4. click on to navigate to your extracted file and select it then click Open.

5. Click Next >

6. Click Import

   This May Take a while.

now you are all Good to go to start Kali-Linux.