You forgot to mention what operating system you have, but in Mint 16 Cinnamon I just create bookmarks in Nemo, which give me access to my /data folders. (click Bookmark > Add Bookmark for each folder.)
Then this is what it looks like in Nemo after I rename those bookmarks.
In the graphic, Music is on sdb1, and Music sda2 is not, but they are all right there in Nemo for me to access.
You have the option of deleting the empty Music folder, or other empty folders created by the installation, if you want it to look neater. Personally, I use them for temporary storage occasionally.
Once you do that, you don't even have to create those bookmarks again in a new Mint installation. All you have to do is copy the text file /home/yourusername/.config/gtk-3.0/bookmarks from your old Mint to your new installation - (as long as your mount point is identical to the old Mint - and assuming that the new Mint uses Nemo).
You can accomplish the same thing the old school way, which is to create symlinks.
I can describe that - but it would be easier if you run the command -
and post the result