Opening the Jupyter notebook in a different drive on Windows 10.

Assuming that you have Anaconda 3 installed, 
you can open the "Anaconda Prompt" window and start jupyter,
however, it opens in the default C: drive.

Anaconda prompt does not allow you to change the drive from the command line. (WTF !?!)

The simplest solution I found was to specify the new drive (R: for Repos) in Jupyter startup:

> jupyter notebook --notebook-dir 'R:'

Sidenote: 

In case you wonder why I am putting up with Windows 10 and not working on my MacOS, I wanted to try the NVidia GPU performance with Julia in the Jupyter notebook.