List all available disk
lsblk -lf
or
fdisk -l
Mount drive
mount /dev/<source drive> <target>
mount /dev/sda2 /mnt/drive2
For automount, edit /etc/fstab
nano fstab
/dev/sda1 /mnt/drive1 auto auto 0 0
/dev/sda2 /mnt/drive2 auto auto 0 0