Steps to mount large size (>2 TB) GPT formatted external hard drive on Linux

mount_4tb.sh

# Following command should list the 4 TB external hard drive. At the bottom you will see external hdd info and after that /dev/sdc or something like that:
sfdisk -l

# We need to create one partition of 4 TB so that it can be mounted. For this we need parted command with our external hdd parameter:
parted /dev/sdc

# you will enter into parted app. Enter mklabel to rewrite partition table of external drive i.e. /dev/sdc
(parted) mklabel gpt

# set unit to TB
(parted) unit TB

# create 4 TB partition
(parted) mkpart primary 0.00TB 4.00TB

# print partitions to verify
(parted) print

# quit parted app
(parted) quit

# format filesystem of external drive's partition
mkfs.ext4 /dev/sdc1

# create directory where you will mount external hdd
mkdir /media/usb-hdd

# Mount the drive into the folder
mount /dev/sdc1 /media/usb-hdd

# See if mounted drive is shown with correct size
df -h