How to convert VMDK to VDI/VHD

Question

It's said that VirtualBox's VBoxManage modifyhd --resize command can only be used on either VDI or VHD files. Sadly, I have a VirtualBox image that is in VMDK format, and I don't know how to convert it to those other two formats.

Answer 1

You can use a two-step procedure then - first, use the clonehd command to create a VDI image:

VBoxManage clonehd aaaa.vmdk --format VDI aaaa.vdi

(Have a look also at other options to clonehd, like --variant. To read the help, just run VBoxManage | less).

Once you have the .vdi file, you can proceed with your modifications.