Here is a screenshot of the Virtual Box | Settings | Storage dialog. Notice that Ubuntu.vdi has a virtual size of 25 GB (outlined in red).
What is the virtual size of your "Test Linux.vdi" ?
Here is a screenshot of the Virtual Box | Settings | Storage dialog.
Notice that Ubuntu.vdi has a virtual size of 25 GB (outlined in red).
What is the virtual size of your "Test Linux.vdi" ?