sudomod

I made a Retropie console using an RPi3 a year ago, and have a 500 gb hdd mounted to it. I decided last night to get the DS emulator running. downloaded the experimental, and did an upgrade and update. Now my HDD is no longer mounted. I have gone through all the steps exactly as last time, and it won't mount. I can get to the point where, in the cmd, I can see everything on the harddrive, but it won't show up on emulation station. I am lost. Anyone have any ideas. This is where I have been, and the steps I followed originally and now.
https://www.htpcguides.com/properly-mou ... pberry-pi/
I had Version 4.1, but now I have 4.3.7

I noticed online that there is an easier way to mount, using retropie setup, config or something, then usb mount. I tried this, but it did not work. I think because while running the code, it still advocates the hdd is mounted, although not reading the games in emulation station.