mkdir /newdisk && touch /newdisk/testfile
fdisk -l | grep /dev
sudo fdisk /dev/<diskname>
n add a new partition
p primary
p print the partition table
w write table to disk and exit
mkfs.ext4 /dev/<diskname><partition_id>
sudo nano /etc/fstab
/dev/sdb1 /newdisk ext4 defaults 0 2
df -h
ll /newdisk