The below described method has caused problems for some people (see comments) so make sure you have a backup of your VM before starting. At the end of this blog post I give some tips on how to make an export of a VM small. This makes uploading and copying the VM much easier. If you have created a nice VM and want to distribute it, it helps if the VM export is not too large. Do think before you execute these (or similar) steps since if you do not do them correctly, you might screw up your partitions and potentially lose data. If your partition layout differs, the steps to take are similar but might differ slightly. I’ve done a pretty default Ubuntu 16.04 installation as guest in VirtualBox. In this blog I describe the steps I’ve done to increase the size a VirtualBox Ubuntu guest disk without loosing data. For example if want to install additional software. After using the VM for a while, it happens (often) that I need more space than I initially assigned. I think it will be enough for what I want to use the VM for.

Sometimes I create a VirtualBox disk for usage in a VM with a certain size.

Installed vms on mac disk space full