linux list all drives and partitions
the following command will list all drives and partitions in your shell
sudo lsblk -o UUID,NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL,MODEL
It should look something like this depending on your drive setup
You can aso run blkid to list all partitions, not in a tree view
I added a larger external drive, but the red light on the pi was blinking so, i guess it does not have enough power to handle that drive and the others
Apparently if the light blinks on the 2b it means it is not getting enough power.
Further Reading on Mounting Drives.