That’s the error message:
Could not open the medium ‘/drive/username/partition/virtual_machine_name.vdi’.
VD: error VERR_FILE_NOT_FOUND opening image file ‘/drive/username/Data/virtual_machine_name.vdi.vdi’ (VERR_FILE_NOT_FOUND).
More details on the error:
It happened with me because I have the virtual machine on a different partition, and I started it without mounting it, that ruined the installation.
How to fix it?
I had to uninstall VirtualBox and install from scratch..
That’s the only fix, uninstall VirtualBox.