You can now convert the virtual disc from fixed to dynamic or dynamic to fixed using the VBoxManage command. To do so, go to the Start menu and type cmd into the search box.
To get started, open a Command Prompt window.Instead, look in the directory where you installed VirtualBox. It’s located in the VirtualBox programme directory on Windows, which is C:\Program Files\Oracle\VirtualBox by default. You must instead use the VBoxManage.exe command. You can convert a fixed disc to a dynamic disc or a dynamic disc to a fixed disc in VirtualBox, but this option isn’t visible in the graphical interface.Step 1: Locate the VBoxManage Command and Open a Command Prompt Step 2: Locate the Path to the Disk You Want To Convert.