Question: My end goal is that I want to wipe all of Ubuntu off my computer completely and run Windows 10 solely. Right now I have both of them on my system, but I am unable to get to the Windows 10 login screen because I'm greeted with "Error: Unknown filesystem" and enters me into grub rescue>. I'm not sure how to continue from here to the Windows 10 login screen, and how I can completely remove Ubuntu from my system.

Answer: 
Using Pipelight worked beautifully for me. It only runs in Firefox, though.

**Installing Pipelight**

Open up the old terminal (`Ctrl`+`Alt`+`T`) and copy and paste the following commands. To paste into the terminal do `Ctrl`+`Shift`+`V`.

```
sudo add-apt-repository ppa:pipelight/stable

```

After adding the PPA, update the sources with

```
sudo apt-get update

```

Next, you have to install Pipelight.

```
sudo apt-get install --install-recommends pipelight-multi

```

Then, run the below command to update the plugin.

```
sudo pipelight-plugin --update

```

**Configuring Pipelight**

You may have to remove adobe-flashplugin, but I personally did not need to due to it not being installed.

```
sudo apt-get remove adobe-flashplugin

```

Then enable all of the necessary plugins

```
sudo pipelight-plugin --enable flash

```

Go one-by-one to ensure you're accepting each's license agreement

```
sudo pipelight-plugin --enable widevine

```

Finally:

```
sudo pipelight-plugin --enable silverlight

```

Then update Pipelight to recognize these plugins.

```
sudo pipelight-plugin --update

```

Finally, you must add the plugins to Firefox.

```
sudo pipelight-plugin --create-mozilla-plugins

```

**Testing it out!**

If done correctly, Pipelight should have installed an update version of Flash, Silverlight, and Widevine, which it runs through Wine, as can be seen in the Plugins section of the Add-ons Manager.

[![Firefox plugins with up to date Flash, Silverlight and Widevine](https://i.stack.imgur.com/zKzh4.png)](https://i.stack.imgur.com/zKzh4.png)

Finally, open up Firefox and test 'er out.

[![HBO NOW on Ubuntu](https://i.stack.imgur.com/qxMdA.jpg)](https://i.stack.imgur.com/qxMdA.jpg)

Source: <https://www.maketecheasier.com/watch-hbo-now-ubuntu/>
Pipelight solution does not work at the moment, but Firefox with Flash on PlayOnLinux does.

1. Install and run PlayOnLinux

> 
> 
> ```
> sudo apt install playonlinux
> 
> playonlinux
> 
> ```
> 
> 

2. Click Install and search for Firefox

[![enter image description here](https://i.stack.imgur.com/dX5dl.png)](https://i.stack.imgur.com/dX5dl.png)

3. Select Flash when prompted
4. Run Firefox

[![enter image description here](https://i.stack.imgur.com/8sL6B.png)](https://i.stack.imgur.com/8sL6B.png)

5. Go to HBO website and if the videos still do not work, install the Flash they link to.