Hi everyone, I have an SSD with 2 partitions, one with Ubuntu and the other with Windows 10, in which I would like to save all my documents.
I would like to share document folder, photo, video, music and, if possible desktop folder, of Windows with Linux; In this way both the operating systems could access the same file without duplicates. Unfortunately I'm not able to complete this task. Can you help me?

At the moment I have tried to change the paths of the folders listed in the file ~/.config/user-dirs.dirs
Code:
# This file is written by xdg-user-dirs-update
# If you want to change or add directories, just edit the line you're
# interested in. All local changes will be retained on the next run
# Format is XDG_xxx_DIR="$HOME/yyy", where yyy is a shell-escaped
# homedir-relative path, or XDG_xxx_DIR="/yyy", where /yyy is an
# absolute path. No other format is supported.
# 
XDG_DESKTOP_DIR="$HOME/Desktop"
XDG_DOWNLOAD_DIR="$HOME/Downloads"
XDG_TEMPLATES_DIR="$HOME/"
XDG_PUBLICSHARE_DIR="$HOME/Public"
XDG_DOCUMENTS_DIR="$HOME/Documents"
XDG_MUSIC_DIR="$HOME/Music"
XDG_PICTURES_DIR="$HOME/Pictures"
XDG_VIDEOS_DIR="$HOME/Videos"
I tried to change the folders path, for example I replaced this line:
XDG_DOWNLOAD_DIR="$HOME/Downloads"
with this:
XDG_DOWNLOAD_DIR="/media/MyLinuxUsername/64EACCA0EACC6FBA/Users/MyWindowsUsername/Download
At the end I can say this attempt didn't worked. When I restarted the PC on the desktop I found all the Ubuntu's directories Downloads, Documents, Music, ecc... and inside the file file ~/.config/user-dirs.dirs the content I had modified was replaced like this:
XDG_DOWNLOAD_DIR=""

Thank you in advance for your help. I don't know what to do.