There is no way how you could ever convert *.vbox files to *.vdi files, regardless if they both come from VirtualBox. A *.vbox file is just some kind of settings for the virtual machine, so just a one piece of a whole and it needs to be converted as a whole, typically for other virtualization platforms.
Convert VirtualBox settings to VirtualBox disk image.
We found 3 software records in the database related to .vbox to .vdi file format conversion.
Microsoft Windows software - convert vbox to vdi on Windows
A multi-platform x86 virtualization software package
Convert from vbox file format
|Yes, VirtualBox supports vdi file conversion as a target file type.||Yes||No||No||Yes||No||No||No|
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned vbox to vdi. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert vbox to vdi on OS X
Free open-source x86 virtualization software package for Mac
Linux/Unix software - convert vbox to vdi on Linux
Free system virtualization platform for Linux operating system developed by Oracle