3TB Storage on a Raspberry Pi 2 (Doze Version)

I catch some flack sometimes. Mostly when I forget to do what I say I would. Today I'm making good on a 9 month old promise to you, the reader. This is how to have {as much hard drive space as your computer's body has room for} space for RetroPie and the Raspberry Pi for you, the Windows user.
I had my hot wife help me with this one. She knows more about Doze stuff than I do. I've been out of the Windows game at home at at work for years now. Special thanks to her for the screenshots.

Step 1: Create a Directory

Put it on the drive where you will store the juicy payload for the Pi.

For illustration purposes, a Documents folder will do. Probably not for you though

Step 2: Copy roms/BIOS or other folders (RetroPie only)

In your Explorer sidebar, click network and root around a bit until you find your Raspberry Pi. Find the roms and other directories that are shared by the Pi and copy the contents to the directory created in Step 1.

Dem Games

It's important to note that if you want to do this with more than one directory that is already on the Pi, you will have to repeat steps 1 and 2 as many times as you have folders you want to share from your bad ass rig.

Step 3: Delete the contents of the folders on the Pi

This might be painful if you have quite the collection of games and sundries. Relax. You just backed them up in Step 2. Should anything go sideways, you can always restore!

Go back to that network share you copied all the stuff from in Step 2 and delete EVERYTHING. This is important as future steps will not work without the directory being absolutely devoid of anything resembling a file.

Oh Damn! She got Zork!

Step 4: Share your badass file source

Let's take a minute and disclaim that this is what is considered by the paranoid who don't want their links to pornhub or /r/gonewild exposed on the interwebs to be insane or insecure. I beg to differ as far as the paranoia goes in terms of network security. This tutorial is just for a simple share.

Right click the folder you created in Step 1 -> Sharing

For least possible sadness and greatest possible happiness, select the "Everyone" user to share with.

Everyone is getting into my private stash now

It's important to give the "Everyone" user Read/Write access if you want things to be saved like game state, configs, or other important things.

Step 5: Save share and take note of the directory

That greyed-out mess is important

In this example, everything after \\LADY-PC\ is relevant. Be sure to copy it to something or leave the confirmation window open for reference.

Step 6: Acquire Software on the Pi

Uhhhh wait.. who is writing this? The Pi already has everything ready to go for this with Windows. Take a break. Have a beer and a smoke if you're inclined and enjoy what you've accomplished so far.

Step 7: Configure the Pi to map the share

This step is the same as the most previous post with some variation. SSH into the Pi and open /etc/fstab in an editor of your choice (nano, vi, vim, emacs, your choice). Open with sudo for least possible rage.

Add a new line with something like

//HostIPAddress/Path/To/Your/Share /place/to/share/on/pi cifs guest,uid=1000,gid=1000,iocharset=utf8 0 0
Parts in red are pretty much mandatory for this sort of open setup. Parts in black are up to you and what you want to do with it. Replace spaces with \040 since you use Windows and can't help but put spaces in directory paths. This is your punishment.

Save and quit your editor.

Step 8: mount -a

Put "sudo mount -a" in the console and hit enter. If it doesn't bitch at you, congrats, you win. Type in "sudo init 6" for a restart and you should be off to the races!