Question: I'm trying to start some very large Containers on Docker Toolbox (about 18 GB in total). Unfortunately, I always get the error that there is not enough disk space. I have a 1TB HDD and there are more than 200 GB free.

How can I increase the disk space for docker toolbox?

Answer: 
You can resize without having to delete the VM and recreate it. By default Docker Machine uses VirtualBox, which has the `vboxmanage` command line tool for working with VMs. You can use the [modifymedium](https://www.virtualbox.org/manual/ch08.html#vboxmanage-modifyvdi) command to change disk size:

```
vboxmanage modifymedium docker-vm.vdi --resize 100000

```
In my case I had a lot of stopped containers, images and volumes - eating up space. Below commands help:

`docker container prune`

`docker volume prune`

`docker image prune`