Ubuntu makes partitions available under the /media directory for the user. If your user name was actually blackhawk2165, you would need to go to the /media/blackhawk2165 directory and find the partition. They are usually listed as UUIDs, which are long number/letter combinations so it is difficult to know which partition is which unless you can identify it by the directories and files there. You can also create a mount point manually and mount it. To find out where sdb2 is mounted, for example, you can run the df -h command suggested above. If it doesn't show up with that command it is not mounted.
Okay so I tried copying the directory with /dev/sdb2/directory/, /dev/sdb/sdb2/directory/, /dev/sdb1/directory/, /dev/sdb/sdb1/directory
You need to copy from the mount point of one partition to the mount point of the other partition. If you are copying to a directory other than the /home/user, you need administrator privileges in almost all cases which means using sudo on Ubuntu