So, if you just created a dynamic disk, this won’t shrink it. Remember that this will only shrink the disk if it’s grown in size and you’ve since removed data. RELATED: Beginner Geek: How to Create and Use Virtual Machines But you can manually shrink a dynamic disk using a hidden command. However, if you delete data from the virtual machine later, you’ll notice that the disk doesn’t automatically shrink.
By default, VirtualBox creates dynamic disks that grow over time as you add data.
