What does "No bootable medium found" mean in VirtualBox?

Solution 1:

This message simply means that you haven't told your virtual machine where to find its OS.

In the Virtual Machine window, go to Storage, and medium. see image below.

Solution 2:

I had this problem when I was trying to get my own VM up and running. I had downloaded a VDI file off of OSBoxes and was attempting to use that to create a VM.

When you create your own VM, make sure that, when prompted for the creation of a Virtual Hard Disk, you select:

Use an existing virtual hard disk file

Use the file picker to locate the VDI file in your file system and select it.

Be sure not to create a new virtual hard disk; load the one you are trying to run.

The picture below illustrates my point.

Solution 3:

Assuming you had created a virtual hard drive, and installed Ubuntu onto this drive as depicted in answers to the following question:

• How to install Ubuntu on VirtualBox?

Then if you finished you installation, and removed your installation ISO from the virtual CD bay you should be able to boot from this hard drive.

This of course can only be done in case you had included this drive's image in the virtual box machine's "Storage" settings where you can attach the VDI image of your installation to either a virtual IDE, or a virtual SATA port:

In addition we need to make sure you had not disabled booting from your hard drive in the System > Boot Order settings of your virtual machine:

Solution 4:

if you have (as it seems to me to understand) installed virtualbox and created a vm in it, then you must configure it, network and storage, if your vm is brand new.

If you get no bootable medium, it means that in your vm both the HDU and the CDU are empty (it can mean too that your vm HDU hasn't any boot record or any OS on).

Cheers,

Silvia