VirtualBox: No bootable medium found after trying to encrypt dynamic disk
Solution 1:
The vdi is either permanently damaged or it's too unreliable to be used anymore, so your best option is to delete the existing vdi, start over create a new vdi.
The vdi is either permanently damaged or it's too unreliable to be used anymore, so your best option is to delete the existing vdi, start over create a new vdi.