LVM is a form of advanced partition management which will help us easy to manage disk space such as resize the volume, replacement of physical disk and etc.

Below is the diagram to show the basic structure of LVM

LVM consists of Physical Volumes, Volume Group, Logical Volumes, and finally file systems. 

You can delete both MBR and GPT partitions with parted command

i) Login as root user, execute the parted command with the disk devices that you want to delete in command prompt

ii) identify the partition number that you want to delete

iii) Delete the partition by enter rm command with partition number

Take note that rm command will immediately delete the partition from the partition table.

iv) Exit parted

i) Login as root user, execute the parted command with the disk devices in command prompt

ii) Type print. You will see a message about an unrecognized disk label