Mounting a secondary partition from an SD card in /storage
I really thought this would be stupid simple to do, I needed an ext2 partition for link2sd as well as for a very large file (12GB) as fat32 would not support it. This is fine the file is present and the card partition and formatted in Linux. The primary fat32 partition works great, the problem is I'm looking for a simple way to mount the secondary ext2 partition as read/write somewhere that I can access it when I need, link2sd can mount it but it is not access able to browse it (when I can find it which is not often). I really thought no problem just mount it using mount (worst case), but I ca not even locate the block device to mount, it exists I know that from using a card reader, but I can not get Android (even as root) to list the partition tables (fdisk -l shows nothing). mount shows what is mounted, but not the partition that I want.
All I want to do is auto mount a second partition as /storage/XYZ, I figured 5 minutes or that there would be an app to do this, I have not found any and after wasting to much time trying to get it to work, I'm asking here as I'm lost and tired of fighting for something so simple.