# Microsoft Hyper-V Creates a Boot2Docker virtual machine locally on your Windows machine using Hyper-V. [See here](http://windows.microsoft.com/en-us/windows-8/hyper-v-run-virtual-machines) for instructions to enable Hyper-V. You will need to use an Administrator level account to create and manage Hyper-V machines. > **Note**: You will need an existing virtual switch to use the > driver. Hyper-V can share an external network interface (aka > bridging), see [this blog](http://blogs.technet.com/b/canitpro/archive/2014/03/11/step-by-step-enabling-hyper-v-for-use-on-windows-8-1.aspx). > If you would like to use NAT, create an internal network, and use > [Internet Connection > Sharing](http://www.packet6.com/allowing-windows-8-1-hyper-v-vm-to-work-with-wifi/). Options: - `--hyper-v-boot2docker-url`: The URL of the boot2docker ISO. Defaults to the latest available version. - `--hyper-v-boot2docker-location`: Location of a local boot2docker iso to use. Overrides the URL option below. - `--hyper-v-virtual-switch`: Name of the virtual switch to use. Defaults to first found. - `--hyper-v-disk-size`: Size of disk for the host in MB. - `--hyper-v-memory`: Size of memory for the host in MB. By default, the machine is setup to use dynamic memory. Environment variables and default values: | CLI option | Environment variable | Default | |----------------------------------|----------------------| -------------------------| | `--hyper-v-boot2docker-url` | - | *Latest boot2docker url* | | `--hyper-v-boot2docker-location` | - | - | | `--hyper-v-virtual-switch` | - | *first found* | | `--hyper-v-disk-size` | - | `20000` | | `--hyper-v-memory` | - | `1024` |