Documentation

lsblk

sudo umount /dev/sda1  

sudo mkfs.exfat -n "label" /dev/sda1 (formatting) #Could be anything instead of sda1, check using lsblk

df -h #for seeing how much space you have left on each partition

Mounting a disk:

Most approproate place to mount a disk is in /mnt or /media

sudo mount /dev/sda1 /mnt/disk1/

--> Disk1 is a folder you can create for better viewing in mnt you can also mount in /media (for temp devices)

--> ncdu is a great utility tool for viewing disk space

cat /etc/fstab

--> This is a very important file which should not be messed with unless you want to add a new hard disk basically it contains the names of all the disk through which the computer will go line by line to mount during booting adding a line to your new hard disk or ssd will allow it to mount your disk during boot

Creating a new partition table

sudo fdisk /dev/sdb
p #(for current partition table)
m #(for help)
g #(for new partition table of gpt type)
n #(for new partition table)
1 #for first partition
#no reason to change first sector 
#fixed size or enter to make it take the entirity of the disk
Y
w
#now changes have been saved 
#now allocate a new partition system on the drive using the mkfs command listed earlierls

Now for creating multiple partition:

sudo fdisk /dev/sda

--> Remember when it asks for end of sector type 1G or 2G or however many you may have to delete the prev partition using 'd'

Encryption of a disk

sudo cryptsetup luksFormat /dev/sda1

--> you will know follow the necessary steps and give passphrase

now to open the disk to mount (done before manually mounting) also this step is automatically done when you enter the pen drive but after encryption if you want to access then youll have to manually open then mount

Steps to follow for the first time (encryption)

#OPEN->
sudo cryptsetup open /dev/sda1 any_name

#DONT FORGET TO FORMAT WITH FILE TYPE->
sudo mkfs.exfat /dev/mapper/any_name

#MOUNTING->
sudo mount /dev/maper/any_name

#CLOSING (to close and encrypt again)->
sudo cryptsetup close /dev/mapper/any_name

--> When you insert disk again after encryption you wont have to perform these tasks as it will automatically be done by the os instead of 'any_name' youll see something like luks9894932942093 (something big and long :|)

Removing the encryption

sudo cryptsetup luksOpen /dev/sda1 my_drive
sudo cryptsetup luksRemove /dev/sda1
sudo cryptsetup luksClose my_drive
sudo mkfs.exfat /dev/sda1