you have to format your SSD disk in exfat format. Plug it to your Pi, load Recalbox and choose your SSD drive (give it a name) in the menu.
RCB will reboot and create all required folders on your SSD.
So I did that and recalbox found it with no issues but the issue remained.
I decided to check the drive one more time and I discovered that the file system somehow duplicated itself.
This is what my drive had on it for example:
But it also had a roms folder as well and that looked like this:
My files were all in the first set except for one system. After I moved the files all to share—>roms—>system name, the game list was finally updated correctly.
I’m not sure what happened to cause the issue but it may have been caused by me originally formatting the drive without a drive letter and then after I had installed it I removed it and hooked it up back to my computer but this time I assigned a drive letter to it. I then reinstalled it in the pi and selected the newly named drive.
From your computer you can either go to your network connections and type : \recalbox and bulk copy all of the roms you want to or from the corresponding folder or you can use a Web browser and go to http://your recalbox IP address and use the user interface to manage your recalbox.