How to mount a disk from terminal

Acknowledgement to posts on https://askubuntu.com/questions/125257/how-do-i-add-an-additional-hard-drive

1. Partition

1.1 Find your disk

Run the following command to find your disk. Note that sudo is required or there won't be any output.

sudo blkid

1.2 Format your disk (1) - create a partition

If it is already formatted, you should see entry like /dev/sdb1 with UUID and PARTUUID settings. (not formatted properly if only UUID or PARTUUID is shown!) For example, you need to format your hdd with output like this:

...
/dev/sdb: UUID="the UUID" TYPE="ext4"
...

 If your disk is not formatted, create a new partition:

 sudo cgdisk /dev/sdb

Follow the instructions of cgdisk. Choose [New] and press enter to create new partition from free space. The default options are ok. Then cgdisk has results like this

Part. #     Size        Partition Type            Partition Name
----------------------------------------------------------------
            1007.0 KiB  free space
   1        7.3 TiB     Linux filesystem

Choose [write] and press enter. Input "yes" after you see

Are you sure you want to write the partition table to disk? (yes or no): yes

And then press [Quit].

1.3 Format your disk (2) - formating

Format the partitioned disk

sudo mkfs -t ext4 /dev/sdb1

The formatting takes about one minute. Then after you run `sudo blkid` again, you should be able to see both UUID and PARTUUID like this

...
/dev/sdb1: UUID="...123..." TYPE="ext4" PARTUUID="...456..."
...

2. Mount

After you are done creating your partitions (it will be just one ext4 data partition after running the commands above), you need to permanently mount it.

2.1 Create a mount point

sudo mkdir /hdd

2.2 Edit /etc/fstab

Open `/etc/fstab` file with `root` permissions.

sudo vim /etc/fstab

Add following to the end of the file:

UUID=[the generated UUID]    /hdd    ext4    defaults    0    0

 2.3 Mount partition

Last step and you're done!

sudo mount /hdd