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@@ -7,13 +7,13 @@ page_keywords: Docker, Docker documentation, requirements, boot2docker, VirtualB

 > **Note:**

 > Docker is supported on Mac OS X 10.6 "Snow Leopard" or newer.

-The Docker Engine uses Linux-specific kernel features, so to run it on OS X

-we need to use a lightweight virtual machine (vm).  You use the OS X Docker client to

+Because the Docker Engine uses Linux-specific kernel features, you'll need to use a

+lightweight virtual machine (VM) to run it on OS X. You use the OS X Docker client to

 control the virtualized Docker Engine to build, run, and manage Docker containers.

-To make this process easier, we've designed a helper application called

-[Boot2Docker](https://github.com/boot2docker/boot2docker) that installs the

-virtual machine and runs the Docker daemon.

+To make this process easier, we've built a helper application called

+[Boot2Docker](https://github.com/boot2docker/boot2docker) that installs a

+virtual machine (using VirtualBox) that's all set up to run the Docker daemon.

 ## Demonstration

@@ -22,50 +22,67 @@ virtual machine and runs the Docker daemon.

 ## Installation

 1. Download the latest release of the [Docker for OS X Installer](

-   https://github.com/boot2docker/osx-installer/releases)

+   https://github.com/boot2docker/osx-installer/releases) (Look for the green

+   Boot2Docker-x.x.x.pkg button near the bottom of the page.)

-2. Run the installer, which will install VirtualBox and the Boot2Docker management

-   tool.

+2. Run the installer by double-clicking the downloaded package, which will install a

+VirtualBox VM, Docker itself, and the Boot2Docker management tool.

    ![](/installation/images/osx-installer.png)

-3. Run the `Boot2Docker` app in the `Applications` folder:

-   ![](/installation/images/osx-Boot2Docker-Start-app.png)

-

-   Or, to initialize Boot2Docker manually, open a terminal and run:

+3. Locate the `Boot2Docker` app in your `Applications` folder and run it.

+   Or, you can initialize Boot2Docker from the command line by running:

 	     $ boot2docker init

 	     $ boot2docker start

 	     $ export DOCKER_HOST=tcp://$(boot2docker ip 2>/dev/null):2375

+A terminal window will open and you'll see the virtual machine starting up. 

 Once you have an initialized virtual machine, you can control it with `boot2docker stop`

 and `boot2docker start`.

+> **Note:**

+> If you see a message in the terminal that looks something like this:

+>

+>    `To connect the Docker client to the Docker daemon, please set: export 

+DOCKER_HOST=tcp://192.168.59.103:2375`

+> 

+you can safely set the evironment variable as instructed.

+

+View the

+[Boot2Docker ReadMe](https://github.com/boot2docker/boot2docker/blob/master/README.md)

+for more information.

+

 ## Upgrading

 1. Download the latest release of the [Docker for OS X Installer](

    https://github.com/boot2docker/osx-installer/releases)

-2. Run the installer, which will update VirtualBox and the Boot2Docker management

-   tool.

+2. If Boot2Docker is currently running, stop it with `boot2docker stop`. Then, run

+the installer package, which will update Docker and the Boot2Docker management tool.

-3. To upgrade your existing virtual machine, open a terminal and run:

+3. To complete the upgrade, you also need to update your existing virtual machine. Open a

+terminal window and run:

         $ boot2docker stop

         $ boot2docker download

         $ boot2docker start

+This will download an .iso containing a fresh VM and start it up.

+

 ## Running Docker

-From your terminal, you can test that Docker is running with the small `hello-world` example image.

-Start the vm and then run:

+From your terminal, you can test that Docker is running with our small `hello-world`

+example image:

+Start the vm (`boot2docker start`) and then run:

     $ docker run hello-world

-This should download the very small `hello-world` image and print a `Hello from Docker.` message.

+This should download the `hello-world` image, which then creates a small

+container with an executable that prints a brief `Hello from Docker.` message.

 ## Container port redirection

-The latest version of `boot2docker` sets up a host only network adaptor which provides

+The latest version of `boot2docker` sets up a host-only network adaptor which provides

 access to the container's ports.

 If you run a container with an exposed port,

@@ -76,14 +93,16 @@ then you should be able to access that Nginx server using the IP address reporte

     $ boot2docker ip

-Typically, it is 192.168.59.103, but it could get changed by Virtualbox's DHCP

-implementation.

+Typically, it is 192.168.59.103:2375, but VirtualBox's DHCP implementation might change

+this address in the future.

 # Further details

-If you are curious, the username for the boot2docker default user is `docker` and the password is `tcuser`.

+If you are curious, the username for the boot2docker default user is `docker` and the

+password is `tcuser`.

-The Boot2Docker management tool provides several commands:

+The Boot2Docker management tool provides several additional commands for working with the

+VM and Docker:

     $ ./boot2docker

     Usage: ./boot2docker [<options>]